/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 21:07:46,117 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-23 21:07:46,177 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-23 21:07:46,199 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 21:07:46,199 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 21:07:46,201 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 21:07:46,201 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 21:07:46,201 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 21:07:46,201 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 21:07:46,201 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 21:07:46,202 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 21:07:46,202 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 21:07:46,202 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 21:07:46,202 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 21:07:46,202 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 21:07:46,203 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 21:07:46,203 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 21:07:46,203 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 21:07:46,203 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 21:07:46,203 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 21:07:46,204 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 21:07:46,204 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 21:07:46,204 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 21:07:46,204 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 21:07:46,204 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 21:07:46,205 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 21:07:46,205 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 21:07:46,205 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 21:07:46,205 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 21:07:46,205 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 21:07:46,206 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 21:07:46,206 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 21:07:46,206 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 21:07:46,483 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 21:07:46,496 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 21:07:46,499 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 21:07:46,501 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 21:07:46,501 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 21:07:46,502 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c
[2019-11-23 21:07:46,578 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020909d30/00d0c14ee84e40d5a43e3604d17fd119/FLAG2a56dee87
[2019-11-23 21:07:47,350 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 21:07:47,350 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c
[2019-11-23 21:07:47,389 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020909d30/00d0c14ee84e40d5a43e3604d17fd119/FLAG2a56dee87
[2019-11-23 21:07:47,405 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020909d30/00d0c14ee84e40d5a43e3604d17fd119
[2019-11-23 21:07:47,416 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 21:07:47,418 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 21:07:47,419 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 21:07:47,419 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 21:07:47,423 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 21:07:47,424 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:07:47" (1/1) ...
[2019-11-23 21:07:47,427 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea530fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:47, skipping insertion in model container
[2019-11-23 21:07:47,427 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:07:47" (1/1) ...
[2019-11-23 21:07:47,436 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 21:07:47,560 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 21:07:49,033 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:07:49,041 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 21:07:49,614 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:07:49,644 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 21:07:49,645 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49 WrapperNode
[2019-11-23 21:07:49,645 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 21:07:49,646 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 21:07:49,646 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 21:07:49,647 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 21:07:49,655 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:49,704 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:49,919 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 21:07:49,919 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 21:07:49,919 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 21:07:49,919 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 21:07:49,929 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:49,930 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:49,964 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:49,964 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:50,119 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:50,154 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:50,198 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (1/1) ...
[2019-11-23 21:07:50,273 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 21:07:50,273 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 21:07:50,273 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 21:07:50,427 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 21:07:50,428 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (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
[2019-11-23 21:07:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 21:07:50,488 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 21:07:56,026 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 21:07:56,026 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 21:07:56,028 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:07:56 BoogieIcfgContainer
[2019-11-23 21:07:56,028 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 21:07:56,029 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 21:07:56,029 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 21:07:56,033 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 21:07:56,033 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:07:47" (1/3) ...
[2019-11-23 21:07:56,034 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fba0632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:07:56, skipping insertion in model container
[2019-11-23 21:07:56,034 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:49" (2/3) ...
[2019-11-23 21:07:56,035 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fba0632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:07:56, skipping insertion in model container
[2019-11-23 21:07:56,035 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:07:56" (3/3) ...
[2019-11-23 21:07:56,037 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label22.c
[2019-11-23 21:07:56,047 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 21:07:56,056 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 21:07:56,067 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 21:07:56,112 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 21:07:56,112 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 21:07:56,113 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 21:07:56,113 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 21:07:56,113 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 21:07:56,114 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 21:07:56,114 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 21:07:56,114 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 21:07:56,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 818 states.
[2019-11-23 21:07:56,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2019-11-23 21:07:56,165 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:07:56,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:07:56,167 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:07:56,174 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:07:56,174 INFO  L82        PathProgramCache]: Analyzing trace with hash -107486446, now seen corresponding path program 1 times
[2019-11-23 21:07:56,184 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:07:56,184 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520155843]
[2019-11-23 21:07:56,184 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:07:56,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:07:56,518 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:07:56,519 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520155843]
[2019-11-23 21:07:56,520 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:07:56,520 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:07:56,522 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895156780]
[2019-11-23 21:07:56,527 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:07:56,527 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:07:56,541 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:07:56,542 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:07:56,544 INFO  L87              Difference]: Start difference. First operand 818 states. Second operand 4 states.
[2019-11-23 21:08:04,429 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:04,430 INFO  L93              Difference]: Finished difference Result 3142 states and 6130 transitions.
[2019-11-23 21:08:04,430 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:04,432 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 64
[2019-11-23 21:08:04,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:04,464 INFO  L225             Difference]: With dead ends: 3142
[2019-11-23 21:08:04,464 INFO  L226             Difference]: Without dead ends: 2257
[2019-11-23 21:08:04,471 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:04,493 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2257 states.
[2019-11-23 21:08:04,616 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257.
[2019-11-23 21:08:04,618 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2257 states.
[2019-11-23 21:08:04,627 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 4045 transitions.
[2019-11-23 21:08:04,629 INFO  L78                 Accepts]: Start accepts. Automaton has 2257 states and 4045 transitions. Word has length 64
[2019-11-23 21:08:04,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:04,630 INFO  L462      AbstractCegarLoop]: Abstraction has 2257 states and 4045 transitions.
[2019-11-23 21:08:04,630 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:04,630 INFO  L276                IsEmpty]: Start isEmpty. Operand 2257 states and 4045 transitions.
[2019-11-23 21:08:04,636 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2019-11-23 21:08:04,636 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:04,637 INFO  L410         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, 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]
[2019-11-23 21:08:04,637 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:04,637 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:04,638 INFO  L82        PathProgramCache]: Analyzing trace with hash 1247744343, now seen corresponding path program 1 times
[2019-11-23 21:08:04,638 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:04,638 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623859211]
[2019-11-23 21:08:04,638 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:04,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:04,882 INFO  L134       CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:08:04,882 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623859211]
[2019-11-23 21:08:04,883 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:04,883 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:08:04,883 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9829423]
[2019-11-23 21:08:04,885 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:04,885 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:04,885 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:04,885 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:04,886 INFO  L87              Difference]: Start difference. First operand 2257 states and 4045 transitions. Second operand 4 states.
[2019-11-23 21:08:12,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:12,307 INFO  L93              Difference]: Finished difference Result 9018 states and 16172 transitions.
[2019-11-23 21:08:12,308 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:12,308 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 139
[2019-11-23 21:08:12,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:12,343 INFO  L225             Difference]: With dead ends: 9018
[2019-11-23 21:08:12,343 INFO  L226             Difference]: Without dead ends: 6763
[2019-11-23 21:08:12,348 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:12,355 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6763 states.
[2019-11-23 21:08:12,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012.
[2019-11-23 21:08:12,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6012 states.
[2019-11-23 21:08:12,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9361 transitions.
[2019-11-23 21:08:12,495 INFO  L78                 Accepts]: Start accepts. Automaton has 6012 states and 9361 transitions. Word has length 139
[2019-11-23 21:08:12,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:12,498 INFO  L462      AbstractCegarLoop]: Abstraction has 6012 states and 9361 transitions.
[2019-11-23 21:08:12,498 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:12,498 INFO  L276                IsEmpty]: Start isEmpty. Operand 6012 states and 9361 transitions.
[2019-11-23 21:08:12,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-11-23 21:08:12,505 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:12,505 INFO  L410         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, 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]
[2019-11-23 21:08:12,505 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:12,506 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:12,506 INFO  L82        PathProgramCache]: Analyzing trace with hash 1894114504, now seen corresponding path program 1 times
[2019-11-23 21:08:12,506 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:12,506 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103760052]
[2019-11-23 21:08:12,507 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:12,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:12,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:08:12,747 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103760052]
[2019-11-23 21:08:12,747 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:12,747 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:08:12,748 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298177645]
[2019-11-23 21:08:12,748 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:12,748 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:12,749 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:12,749 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:12,749 INFO  L87              Difference]: Start difference. First operand 6012 states and 9361 transitions. Second operand 4 states.
[2019-11-23 21:08:19,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:19,899 INFO  L93              Difference]: Finished difference Result 24040 states and 37437 transitions.
[2019-11-23 21:08:19,900 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:19,900 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 145
[2019-11-23 21:08:19,900 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:19,967 INFO  L225             Difference]: With dead ends: 24040
[2019-11-23 21:08:19,967 INFO  L226             Difference]: Without dead ends: 18030
[2019-11-23 21:08:19,976 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:19,993 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18030 states.
[2019-11-23 21:08:20,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18030 to 12020.
[2019-11-23 21:08:20,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12020 states.
[2019-11-23 21:08:20,257 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 16979 transitions.
[2019-11-23 21:08:20,258 INFO  L78                 Accepts]: Start accepts. Automaton has 12020 states and 16979 transitions. Word has length 145
[2019-11-23 21:08:20,258 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:20,258 INFO  L462      AbstractCegarLoop]: Abstraction has 12020 states and 16979 transitions.
[2019-11-23 21:08:20,259 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:20,259 INFO  L276                IsEmpty]: Start isEmpty. Operand 12020 states and 16979 transitions.
[2019-11-23 21:08:20,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2019-11-23 21:08:20,261 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:20,261 INFO  L410         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, 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]
[2019-11-23 21:08:20,262 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:20,262 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:20,262 INFO  L82        PathProgramCache]: Analyzing trace with hash 1097725723, now seen corresponding path program 1 times
[2019-11-23 21:08:20,262 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:20,263 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851343238]
[2019-11-23 21:08:20,263 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:20,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:20,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:08:20,415 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851343238]
[2019-11-23 21:08:20,416 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:20,416 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:08:20,416 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545607988]
[2019-11-23 21:08:20,417 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:20,417 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:20,417 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:20,418 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:20,418 INFO  L87              Difference]: Start difference. First operand 12020 states and 16979 transitions. Second operand 4 states.
[2019-11-23 21:08:28,083 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:28,084 INFO  L93              Difference]: Finished difference Result 45817 states and 64665 transitions.
[2019-11-23 21:08:28,084 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:28,084 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 163
[2019-11-23 21:08:28,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:28,155 INFO  L225             Difference]: With dead ends: 45817
[2019-11-23 21:08:28,155 INFO  L226             Difference]: Without dead ends: 33799
[2019-11-23 21:08:28,171 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:28,206 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33799 states.
[2019-11-23 21:08:28,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33799 to 21783.
[2019-11-23 21:08:28,606 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21783 states.
[2019-11-23 21:08:28,637 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 28206 transitions.
[2019-11-23 21:08:28,637 INFO  L78                 Accepts]: Start accepts. Automaton has 21783 states and 28206 transitions. Word has length 163
[2019-11-23 21:08:28,638 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:28,638 INFO  L462      AbstractCegarLoop]: Abstraction has 21783 states and 28206 transitions.
[2019-11-23 21:08:28,639 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:28,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 21783 states and 28206 transitions.
[2019-11-23 21:08:28,645 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 292
[2019-11-23 21:08:28,645 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:28,646 INFO  L410         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, 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, 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]
[2019-11-23 21:08:28,646 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:28,647 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:28,647 INFO  L82        PathProgramCache]: Analyzing trace with hash 2036573175, now seen corresponding path program 1 times
[2019-11-23 21:08:28,647 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:28,649 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937699281]
[2019-11-23 21:08:28,649 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:28,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:28,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:08:28,920 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937699281]
[2019-11-23 21:08:28,921 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:28,921 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:08:28,922 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955551523]
[2019-11-23 21:08:28,922 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:28,922 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:28,923 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:28,923 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:28,923 INFO  L87              Difference]: Start difference. First operand 21783 states and 28206 transitions. Second operand 4 states.
[2019-11-23 21:08:36,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:36,714 INFO  L93              Difference]: Finished difference Result 47319 states and 60513 transitions.
[2019-11-23 21:08:36,719 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:36,720 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 291
[2019-11-23 21:08:36,720 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:36,754 INFO  L225             Difference]: With dead ends: 47319
[2019-11-23 21:08:36,756 INFO  L226             Difference]: Without dead ends: 25538
[2019-11-23 21:08:36,779 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:36,799 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25538 states.
[2019-11-23 21:08:37,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 24787.
[2019-11-23 21:08:37,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24787 states.
[2019-11-23 21:08:37,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24787 states to 24787 states and 30784 transitions.
[2019-11-23 21:08:37,252 INFO  L78                 Accepts]: Start accepts. Automaton has 24787 states and 30784 transitions. Word has length 291
[2019-11-23 21:08:37,253 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:37,253 INFO  L462      AbstractCegarLoop]: Abstraction has 24787 states and 30784 transitions.
[2019-11-23 21:08:37,253 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:37,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 24787 states and 30784 transitions.
[2019-11-23 21:08:37,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 296
[2019-11-23 21:08:37,263 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:37,263 INFO  L410         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, 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, 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]
[2019-11-23 21:08:37,263 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:37,264 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:37,264 INFO  L82        PathProgramCache]: Analyzing trace with hash -1358239635, now seen corresponding path program 1 times
[2019-11-23 21:08:37,264 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:37,265 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244408800]
[2019-11-23 21:08:37,265 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:37,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:37,558 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2019-11-23 21:08:37,558 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244408800]
[2019-11-23 21:08:37,559 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:37,560 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:08:37,560 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394595088]
[2019-11-23 21:08:37,561 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:37,561 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:37,561 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:37,561 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:08:37,561 INFO  L87              Difference]: Start difference. First operand 24787 states and 30784 transitions. Second operand 3 states.
[2019-11-23 21:08:42,171 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:42,171 INFO  L93              Difference]: Finished difference Result 57082 states and 71262 transitions.
[2019-11-23 21:08:42,171 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:42,171 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 295
[2019-11-23 21:08:42,172 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:42,222 INFO  L225             Difference]: With dead ends: 57082
[2019-11-23 21:08:42,222 INFO  L226             Difference]: Without dead ends: 32297
[2019-11-23 21:08:42,248 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:08:42,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32297 states.
[2019-11-23 21:08:42,587 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32297 to 29293.
[2019-11-23 21:08:42,588 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29293 states.
[2019-11-23 21:08:42,622 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29293 states to 29293 states and 36302 transitions.
[2019-11-23 21:08:42,622 INFO  L78                 Accepts]: Start accepts. Automaton has 29293 states and 36302 transitions. Word has length 295
[2019-11-23 21:08:42,623 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:42,623 INFO  L462      AbstractCegarLoop]: Abstraction has 29293 states and 36302 transitions.
[2019-11-23 21:08:42,623 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:42,624 INFO  L276                IsEmpty]: Start isEmpty. Operand 29293 states and 36302 transitions.
[2019-11-23 21:08:42,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 315
[2019-11-23 21:08:42,633 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:42,633 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-11-23 21:08:42,634 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:42,634 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:42,634 INFO  L82        PathProgramCache]: Analyzing trace with hash -1453778030, now seen corresponding path program 1 times
[2019-11-23 21:08:42,634 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:42,635 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95496892]
[2019-11-23 21:08:42,635 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:42,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:42,969 INFO  L134       CoverageAnalysis]: Checked inductivity of 406 backedges. 265 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked.
[2019-11-23 21:08:42,969 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95496892]
[2019-11-23 21:08:42,970 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818496262]
[2019-11-23 21:08:42,970 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:43,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:43,094 INFO  L255         TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:43,107 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:43,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 406 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked.
[2019-11-23 21:08:43,392 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:43,393 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:08:43,393 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530926764]
[2019-11-23 21:08:43,394 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:43,394 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:43,394 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:43,395 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:43,395 INFO  L87              Difference]: Start difference. First operand 29293 states and 36302 transitions. Second operand 3 states.
[2019-11-23 21:08:48,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:48,445 INFO  L93              Difference]: Finished difference Result 60837 states and 76073 transitions.
[2019-11-23 21:08:48,446 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:48,446 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 314
[2019-11-23 21:08:48,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:48,495 INFO  L225             Difference]: With dead ends: 60837
[2019-11-23 21:08:48,496 INFO  L226             Difference]: Without dead ends: 31546
[2019-11-23 21:08:48,512 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 313 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:48,550 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31546 states.
[2019-11-23 21:08:48,932 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31546 to 31546.
[2019-11-23 21:08:48,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31546 states.
[2019-11-23 21:08:48,968 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31546 states to 31546 states and 37108 transitions.
[2019-11-23 21:08:48,969 INFO  L78                 Accepts]: Start accepts. Automaton has 31546 states and 37108 transitions. Word has length 314
[2019-11-23 21:08:48,970 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:48,970 INFO  L462      AbstractCegarLoop]: Abstraction has 31546 states and 37108 transitions.
[2019-11-23 21:08:48,970 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:48,970 INFO  L276                IsEmpty]: Start isEmpty. Operand 31546 states and 37108 transitions.
[2019-11-23 21:08:48,991 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 451
[2019-11-23 21:08:48,991 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:48,992 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:08:49,198 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:49,198 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:49,198 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:49,199 INFO  L82        PathProgramCache]: Analyzing trace with hash -1459618020, now seen corresponding path program 1 times
[2019-11-23 21:08:49,199 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:49,201 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248011253]
[2019-11-23 21:08:49,201 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:49,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:49,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 429 backedges. 265 proven. 4 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked.
[2019-11-23 21:08:49,615 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248011253]
[2019-11-23 21:08:49,615 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415411553]
[2019-11-23 21:08:49,615 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:49,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:49,749 INFO  L255         TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-11-23 21:08:49,784 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:50,199 INFO  L134       CoverageAnalysis]: Checked inductivity of 429 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked.
[2019-11-23 21:08:50,201 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:50,201 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2019-11-23 21:08:50,201 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002986338]
[2019-11-23 21:08:50,202 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:50,202 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:50,203 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:50,208 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:08:50,209 INFO  L87              Difference]: Start difference. First operand 31546 states and 37108 transitions. Second operand 3 states.
[2019-11-23 21:08:53,044 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:53,045 INFO  L93              Difference]: Finished difference Result 63127 states and 74251 transitions.
[2019-11-23 21:08:53,045 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:53,045 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 450
[2019-11-23 21:08:53,046 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:53,089 INFO  L225             Difference]: With dead ends: 63127
[2019-11-23 21:08:53,089 INFO  L226             Difference]: Without dead ends: 31546
[2019-11-23 21:08:53,112 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:08:53,139 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31546 states.
[2019-11-23 21:08:54,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31546 to 31546.
[2019-11-23 21:08:54,480 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31546 states.
[2019-11-23 21:08:54,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31546 states to 31546 states and 36100 transitions.
[2019-11-23 21:08:54,528 INFO  L78                 Accepts]: Start accepts. Automaton has 31546 states and 36100 transitions. Word has length 450
[2019-11-23 21:08:54,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:54,529 INFO  L462      AbstractCegarLoop]: Abstraction has 31546 states and 36100 transitions.
[2019-11-23 21:08:54,529 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:54,529 INFO  L276                IsEmpty]: Start isEmpty. Operand 31546 states and 36100 transitions.
[2019-11-23 21:08:54,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 489
[2019-11-23 21:08:54,563 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:54,564 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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]
[2019-11-23 21:08:54,768 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:54,768 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:54,768 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:54,769 INFO  L82        PathProgramCache]: Analyzing trace with hash -1563585533, now seen corresponding path program 1 times
[2019-11-23 21:08:54,769 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:54,769 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526354105]
[2019-11-23 21:08:54,769 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:54,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:55,673 INFO  L134       CoverageAnalysis]: Checked inductivity of 465 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked.
[2019-11-23 21:08:55,673 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526354105]
[2019-11-23 21:08:55,674 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:55,674 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-23 21:08:55,675 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441854792]
[2019-11-23 21:08:55,676 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-23 21:08:55,676 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:55,676 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-23 21:08:55,676 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:08:55,677 INFO  L87              Difference]: Start difference. First operand 31546 states and 36100 transitions. Second operand 6 states.
[2019-11-23 21:09:03,008 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:03,009 INFO  L93              Difference]: Finished difference Result 84118 states and 96025 transitions.
[2019-11-23 21:09:03,009 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:03,009 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 488
[2019-11-23 21:09:03,009 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:03,056 INFO  L225             Difference]: With dead ends: 84118
[2019-11-23 21:09:03,056 INFO  L226             Difference]: Without dead ends: 52574
[2019-11-23 21:09:03,077 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:09:03,124 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52574 states.
[2019-11-23 21:09:03,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52574 to 51072.
[2019-11-23 21:09:03,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 51072 states.
[2019-11-23 21:09:03,758 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51072 states to 51072 states and 56602 transitions.
[2019-11-23 21:09:03,759 INFO  L78                 Accepts]: Start accepts. Automaton has 51072 states and 56602 transitions. Word has length 488
[2019-11-23 21:09:03,759 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:03,759 INFO  L462      AbstractCegarLoop]: Abstraction has 51072 states and 56602 transitions.
[2019-11-23 21:09:03,759 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-23 21:09:03,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 51072 states and 56602 transitions.
[2019-11-23 21:09:03,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 628
[2019-11-23 21:09:03,787 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:03,788 INFO  L410         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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]
[2019-11-23 21:09:03,788 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:03,788 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:03,789 INFO  L82        PathProgramCache]: Analyzing trace with hash -534449160, now seen corresponding path program 1 times
[2019-11-23 21:09:03,789 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:03,789 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885762709]
[2019-11-23 21:09:03,789 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:03,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:04,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 766 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked.
[2019-11-23 21:09:04,333 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885762709]
[2019-11-23 21:09:04,335 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:04,336 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:09:04,336 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411869534]
[2019-11-23 21:09:04,337 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:09:04,338 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:04,338 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:09:04,338 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:09:04,342 INFO  L87              Difference]: Start difference. First operand 51072 states and 56602 transitions. Second operand 3 states.