/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_label18.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 21:07:33,266 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-23 21:07:33,269 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-11-23 21:07:33,349 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 21:07:33,382 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 21:07:33,385 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 21:07:33,386 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 21:07:33,386 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 21:07:33,386 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 21:07:33,387 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 21:07:33,387 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 21:07:33,387 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 21:07:33,387 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 21:07:33,387 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 21:07:33,388 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 21:07:33,391 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 21:07:33,391 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 21:07:33,391 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 21:07:33,391 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 21:07:33,392 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 21:07:33,392 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 21:07:33,392 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 21:07:33,392 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 21:07:33,392 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 21:07:33,393 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 21:07:33,393 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 21:07:33,394 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 21:07:33,394 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 21:07:33,394 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 21:07:33,394 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 21:07:33,394 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 21:07:33,394 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 21:07:33,395 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 21:07:33,395 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 21:07:33,694 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 21:07:33,718 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 21:07:33,722 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 21:07:33,723 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 21:07:33,723 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 21:07:33,724 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c
[2019-11-23 21:07:33,798 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77906410/e465c7d47f2647b591bfa03800519e74/FLAGa45b6ebb6
[2019-11-23 21:07:34,576 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 21:07:34,577 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c
[2019-11-23 21:07:34,608 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77906410/e465c7d47f2647b591bfa03800519e74/FLAGa45b6ebb6
[2019-11-23 21:07:34,675 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77906410/e465c7d47f2647b591bfa03800519e74
[2019-11-23 21:07:34,687 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 21:07:34,689 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 21:07:34,695 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 21:07:34,695 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 21:07:34,699 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 21:07:34,700 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:07:34" (1/1) ...
[2019-11-23 21:07:34,703 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51664aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:34, skipping insertion in model container
[2019-11-23 21:07:34,703 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:07:34" (1/1) ...
[2019-11-23 21:07:34,712 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 21:07:34,880 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 21:07:36,348 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:07:36,354 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 21:07:36,916 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:07:36,949 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 21:07:36,949 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36 WrapperNode
[2019-11-23 21:07:36,950 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 21:07:36,950 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 21:07:36,951 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 21:07:36,951 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 21:07:36,960 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,012 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,257 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 21:07:37,257 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 21:07:37,258 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 21:07:37,258 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 21:07:37,268 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,268 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,303 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,304 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,569 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,609 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,661 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (1/1) ...
[2019-11-23 21:07:37,708 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 21:07:37,709 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 21:07:37,709 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 21:07:37,709 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 21:07:37,711 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (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 21:07:37,788 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 21:07:37,789 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 21:07:43,330 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 21:07:43,331 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 21:07:43,332 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:07:43 BoogieIcfgContainer
[2019-11-23 21:07:43,333 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 21:07:43,334 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 21:07:43,334 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 21:07:43,337 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 21:07:43,338 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:07:34" (1/3) ...
[2019-11-23 21:07:43,338 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b6efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:07:43, skipping insertion in model container
[2019-11-23 21:07:43,339 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36" (2/3) ...
[2019-11-23 21:07:43,339 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b6efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:07:43, skipping insertion in model container
[2019-11-23 21:07:43,339 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:07:43" (3/3) ...
[2019-11-23 21:07:43,341 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label18.c
[2019-11-23 21:07:43,351 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 21:07:43,360 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 21:07:43,371 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 21:07:43,405 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 21:07:43,405 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 21:07:43,406 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 21:07:43,406 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 21:07:43,406 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 21:07:43,406 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 21:07:43,406 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 21:07:43,406 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 21:07:43,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 818 states.
[2019-11-23 21:07:43,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2019-11-23 21:07:43,446 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:07:43,447 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]
[2019-11-23 21:07:43,447 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:07:43,454 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:07:43,454 INFO  L82        PathProgramCache]: Analyzing trace with hash -92557335, now seen corresponding path program 1 times
[2019-11-23 21:07:43,464 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:07:43,464 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391193414]
[2019-11-23 21:07:43,465 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:07:43,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:07:43,818 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 21:07:43,819 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391193414]
[2019-11-23 21:07:43,820 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:07:43,821 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:07:43,823 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364940494]
[2019-11-23 21:07:43,827 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:07:43,828 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:07:43,842 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:07:43,843 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:07:43,845 INFO  L87              Difference]: Start difference. First operand 818 states. Second operand 4 states.
[2019-11-23 21:07:52,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:07:52,068 INFO  L93              Difference]: Finished difference Result 3158 states and 6146 transitions.
[2019-11-23 21:07:52,069 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:07:52,070 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2019-11-23 21:07:52,071 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:07:52,107 INFO  L225             Difference]: With dead ends: 3158
[2019-11-23 21:07:52,108 INFO  L226             Difference]: Without dead ends: 2257
[2019-11-23 21:07:52,118 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 21:07:52,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2257 states.
[2019-11-23 21:07:52,261 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257.
[2019-11-23 21:07:52,263 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2257 states.
[2019-11-23 21:07:52,271 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3583 transitions.
[2019-11-23 21:07:52,274 INFO  L78                 Accepts]: Start accepts. Automaton has 2257 states and 3583 transitions. Word has length 53
[2019-11-23 21:07:52,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:07:52,275 INFO  L462      AbstractCegarLoop]: Abstraction has 2257 states and 3583 transitions.
[2019-11-23 21:07:52,275 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:07:52,275 INFO  L276                IsEmpty]: Start isEmpty. Operand 2257 states and 3583 transitions.
[2019-11-23 21:07:52,285 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2019-11-23 21:07:52,285 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:07:52,286 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, 1, 1, 1, 1, 1, 1, 1, 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 21:07:52,287 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:07:52,287 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:07:52,287 INFO  L82        PathProgramCache]: Analyzing trace with hash 1116297450, now seen corresponding path program 1 times
[2019-11-23 21:07:52,287 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:07:52,288 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200223821]
[2019-11-23 21:07:52,288 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:07:52,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:07:52,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:07:52,841 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200223821]
[2019-11-23 21:07:52,841 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:07:52,842 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-23 21:07:52,842 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111722593]
[2019-11-23 21:07:52,844 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-23 21:07:52,844 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:07:52,844 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-23 21:07:52,845 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:07:52,845 INFO  L87              Difference]: Start difference. First operand 2257 states and 3583 transitions. Second operand 6 states.
[2019-11-23 21:08:02,037 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:02,037 INFO  L93              Difference]: Finished difference Result 7516 states and 11723 transitions.
[2019-11-23 21:08:02,038 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:02,038 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 129
[2019-11-23 21:08:02,039 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:02,063 INFO  L225             Difference]: With dead ends: 7516
[2019-11-23 21:08:02,064 INFO  L226             Difference]: Without dead ends: 5261
[2019-11-23 21:08:02,067 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:02,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5261 states.
[2019-11-23 21:08:02,148 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261.
[2019-11-23 21:08:02,148 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5261 states.
[2019-11-23 21:08:02,158 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7512 transitions.
[2019-11-23 21:08:02,159 INFO  L78                 Accepts]: Start accepts. Automaton has 5261 states and 7512 transitions. Word has length 129
[2019-11-23 21:08:02,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:02,160 INFO  L462      AbstractCegarLoop]: Abstraction has 5261 states and 7512 transitions.
[2019-11-23 21:08:02,160 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-23 21:08:02,160 INFO  L276                IsEmpty]: Start isEmpty. Operand 5261 states and 7512 transitions.
[2019-11-23 21:08:02,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2019-11-23 21:08:02,163 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:02,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:02,164 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:02,164 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:02,164 INFO  L82        PathProgramCache]: Analyzing trace with hash -1723378956, now seen corresponding path program 1 times
[2019-11-23 21:08:02,165 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:02,165 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636962584]
[2019-11-23 21:08:02,165 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:02,201 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:02,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2019-11-23 21:08:02,592 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636962584]
[2019-11-23 21:08:02,593 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436342830]
[2019-11-23 21:08:02,593 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 21:08:02,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:02,679 INFO  L255         TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:02,690 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:02,784 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2019-11-23 21:08:02,785 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:02,786 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7
[2019-11-23 21:08:02,786 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896104429]
[2019-11-23 21:08:02,788 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:02,788 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:02,788 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:02,789 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-11-23 21:08:02,789 INFO  L87              Difference]: Start difference. First operand 5261 states and 7512 transitions. Second operand 3 states.
[2019-11-23 21:08:07,155 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:07,156 INFO  L93              Difference]: Finished difference Result 13524 states and 18951 transitions.
[2019-11-23 21:08:07,156 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:07,156 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 198
[2019-11-23 21:08:07,158 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:07,196 INFO  L225             Difference]: With dead ends: 13524
[2019-11-23 21:08:07,196 INFO  L226             Difference]: Without dead ends: 8265
[2019-11-23 21:08:07,204 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-11-23 21:08:07,214 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8265 states.
[2019-11-23 21:08:07,320 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 7514.
[2019-11-23 21:08:07,321 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7514 states.
[2019-11-23 21:08:07,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 10299 transitions.
[2019-11-23 21:08:07,334 INFO  L78                 Accepts]: Start accepts. Automaton has 7514 states and 10299 transitions. Word has length 198
[2019-11-23 21:08:07,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:07,335 INFO  L462      AbstractCegarLoop]: Abstraction has 7514 states and 10299 transitions.
[2019-11-23 21:08:07,335 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:07,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 7514 states and 10299 transitions.
[2019-11-23 21:08:07,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 201
[2019-11-23 21:08:07,338 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:07,338 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, 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]
[2019-11-23 21:08:07,542 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:07,542 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:07,543 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:07,543 INFO  L82        PathProgramCache]: Analyzing trace with hash -1205210212, now seen corresponding path program 1 times
[2019-11-23 21:08:07,543 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:07,543 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97541162]
[2019-11-23 21:08:07,544 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:07,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:07,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 171 backedges. 150 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2019-11-23 21:08:07,950 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97541162]
[2019-11-23 21:08:07,950 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586613947]
[2019-11-23 21:08:07,950 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 21:08:08,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:08,056 INFO  L255         TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:08,074 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:08,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:08:08,135 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:08,135 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:08:08,136 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290600998]
[2019-11-23 21:08:08,138 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:08,138 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:08,138 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:08,139 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:08,139 INFO  L87              Difference]: Start difference. First operand 7514 states and 10299 transitions. Second operand 3 states.
[2019-11-23 21:08:12,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:12,640 INFO  L93              Difference]: Finished difference Result 21785 states and 30135 transitions.
[2019-11-23 21:08:12,642 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:12,642 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 200
[2019-11-23 21:08:12,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:12,706 INFO  L225             Difference]: With dead ends: 21785
[2019-11-23 21:08:12,707 INFO  L226             Difference]: Without dead ends: 14273
[2019-11-23 21:08:12,718 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:12,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14273 states.
[2019-11-23 21:08:12,956 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273.
[2019-11-23 21:08:12,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14273 states.
[2019-11-23 21:08:12,980 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18566 transitions.
[2019-11-23 21:08:12,980 INFO  L78                 Accepts]: Start accepts. Automaton has 14273 states and 18566 transitions. Word has length 200
[2019-11-23 21:08:12,980 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:12,981 INFO  L462      AbstractCegarLoop]: Abstraction has 14273 states and 18566 transitions.
[2019-11-23 21:08:12,981 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:12,981 INFO  L276                IsEmpty]: Start isEmpty. Operand 14273 states and 18566 transitions.
[2019-11-23 21:08:12,987 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 234
[2019-11-23 21:08:12,988 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:12,988 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, 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]
[2019-11-23 21:08:13,192 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:13,192 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:13,193 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:13,193 INFO  L82        PathProgramCache]: Analyzing trace with hash -1043628056, now seen corresponding path program 1 times
[2019-11-23 21:08:13,193 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:13,194 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365674268]
[2019-11-23 21:08:13,195 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:13,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:13,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 171 backedges. 150 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2019-11-23 21:08:13,481 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365674268]
[2019-11-23 21:08:13,481 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664627695]
[2019-11-23 21:08:13,481 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:13,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:13,564 INFO  L255         TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-11-23 21:08:13,567 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:13,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 171 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2019-11-23 21:08:13,692 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:13,692 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2019-11-23 21:08:13,692 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134342403]
[2019-11-23 21:08:13,693 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:13,693 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:13,693 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:13,694 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:08:13,694 INFO  L87              Difference]: Start difference. First operand 14273 states and 18566 transitions. Second operand 3 states.
[2019-11-23 21:08:16,413 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:16,414 INFO  L93              Difference]: Finished difference Result 28618 states and 37204 transitions.
[2019-11-23 21:08:16,414 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:16,414 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 233
[2019-11-23 21:08:16,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:16,442 INFO  L225             Difference]: With dead ends: 28618
[2019-11-23 21:08:16,442 INFO  L226             Difference]: Without dead ends: 14273
[2019-11-23 21:08:16,461 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 233 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 21:08:16,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14273 states.
[2019-11-23 21:08:16,620 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273.
[2019-11-23 21:08:16,620 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14273 states.
[2019-11-23 21:08:16,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 17609 transitions.
[2019-11-23 21:08:16,639 INFO  L78                 Accepts]: Start accepts. Automaton has 14273 states and 17609 transitions. Word has length 233
[2019-11-23 21:08:16,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:16,639 INFO  L462      AbstractCegarLoop]: Abstraction has 14273 states and 17609 transitions.
[2019-11-23 21:08:16,640 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:16,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 14273 states and 17609 transitions.
[2019-11-23 21:08:16,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 273
[2019-11-23 21:08:16,644 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:16,645 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, 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]
[2019-11-23 21:08:16,849 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:16,849 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:16,849 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:16,850 INFO  L82        PathProgramCache]: Analyzing trace with hash 1148553904, now seen corresponding path program 1 times
[2019-11-23 21:08:16,850 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:16,850 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923527316]
[2019-11-23 21:08:16,851 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:16,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:17,202 INFO  L134       CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 66 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2019-11-23 21:08:17,203 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923527316]
[2019-11-23 21:08:17,203 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563844552]
[2019-11-23 21:08:17,203 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:17,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:17,292 INFO  L255         TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:17,296 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:17,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2019-11-23 21:08:17,352 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:17,352 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2019-11-23 21:08:17,353 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120361364]
[2019-11-23 21:08:17,354 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:17,354 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:17,354 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:17,354 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:08:17,355 INFO  L87              Difference]: Start difference. First operand 14273 states and 17609 transitions. Second operand 3 states.
[2019-11-23 21:08:21,498 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:21,498 INFO  L93              Difference]: Finished difference Result 33050 states and 41489 transitions.
[2019-11-23 21:08:21,498 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:21,499 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 272
[2019-11-23 21:08:21,499 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:21,532 INFO  L225             Difference]: With dead ends: 33050
[2019-11-23 21:08:21,532 INFO  L226             Difference]: Without dead ends: 18779
[2019-11-23 21:08:21,550 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:08:21,569 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18779 states.
[2019-11-23 21:08:21,762 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18779 to 18779.
[2019-11-23 21:08:21,763 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18779 states.
[2019-11-23 21:08:21,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22791 transitions.
[2019-11-23 21:08:21,803 INFO  L78                 Accepts]: Start accepts. Automaton has 18779 states and 22791 transitions. Word has length 272
[2019-11-23 21:08:21,804 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:21,804 INFO  L462      AbstractCegarLoop]: Abstraction has 18779 states and 22791 transitions.
[2019-11-23 21:08:21,804 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:21,804 INFO  L276                IsEmpty]: Start isEmpty. Operand 18779 states and 22791 transitions.
[2019-11-23 21:08:21,809 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 292
[2019-11-23 21:08:21,809 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:21,810 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-11-23 21:08:22,022 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:22,022 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:22,022 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:22,023 INFO  L82        PathProgramCache]: Analyzing trace with hash -266403833, now seen corresponding path program 1 times
[2019-11-23 21:08:22,023 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:22,023 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811069020]
[2019-11-23 21:08:22,024 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:22,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:22,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 101 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2019-11-23 21:08:22,265 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811069020]
[2019-11-23 21:08:22,266 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549265580]
[2019-11-23 21:08:22,266 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:22,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:22,407 INFO  L255         TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:22,411 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:22,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2019-11-23 21:08:22,697 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:22,697 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2019-11-23 21:08:22,698 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770875]
[2019-11-23 21:08:22,698 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:22,698 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:22,699 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:22,708 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:08:22,709 INFO  L87              Difference]: Start difference. First operand 18779 states and 22791 transitions. Second operand 3 states.
[2019-11-23 21:08:26,470 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:26,470 INFO  L93              Difference]: Finished difference Result 37556 states and 45580 transitions.
[2019-11-23 21:08:26,470 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:26,470 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 291
[2019-11-23 21:08:26,471 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:26,495 INFO  L225             Difference]: With dead ends: 37556
[2019-11-23 21:08:26,496 INFO  L226             Difference]: Without dead ends: 18779
[2019-11-23 21:08:26,518 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:08:26,535 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18779 states.
[2019-11-23 21:08:26,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18779 to 18779.
[2019-11-23 21:08:26,801 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18779 states.
[2019-11-23 21:08:26,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 21662 transitions.
[2019-11-23 21:08:26,832 INFO  L78                 Accepts]: Start accepts. Automaton has 18779 states and 21662 transitions. Word has length 291
[2019-11-23 21:08:26,833 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:26,833 INFO  L462      AbstractCegarLoop]: Abstraction has 18779 states and 21662 transitions.
[2019-11-23 21:08:26,834 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:26,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 18779 states and 21662 transitions.
[2019-11-23 21:08:26,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 349
[2019-11-23 21:08:26,843 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:26,843 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-11-23 21:08:27,046 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:27,047 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:27,047 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:27,047 INFO  L82        PathProgramCache]: Analyzing trace with hash -1432476690, now seen corresponding path program 1 times
[2019-11-23 21:08:27,047 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:27,048 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844443627]
[2019-11-23 21:08:27,048 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:27,094 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:27,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 245 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2019-11-23 21:08:27,382 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844443627]
[2019-11-23 21:08:27,383 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:27,383 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:08:27,383 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014202702]
[2019-11-23 21:08:27,384 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:27,384 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:27,384 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:27,384 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:27,385 INFO  L87              Difference]: Start difference. First operand 18779 states and 21662 transitions. Second operand 4 states.
[2019-11-23 21:08:33,649 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:33,649 INFO  L93              Difference]: Finished difference Result 61588 states and 70986 transitions.
[2019-11-23 21:08:33,649 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:33,649 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 348
[2019-11-23 21:08:33,650 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:33,699 INFO  L225             Difference]: With dead ends: 61588
[2019-11-23 21:08:33,700 INFO  L226             Difference]: Without dead ends: 42811
[2019-11-23 21:08:33,717 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 21:08:33,757 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42811 states.
[2019-11-23 21:08:34,366 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42811 to 40558.
[2019-11-23 21:08:34,366 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40558 states.
[2019-11-23 21:08:34,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40558 states to 40558 states and 44447 transitions.
[2019-11-23 21:08:34,414 INFO  L78                 Accepts]: Start accepts. Automaton has 40558 states and 44447 transitions. Word has length 348
[2019-11-23 21:08:34,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:34,414 INFO  L462      AbstractCegarLoop]: Abstraction has 40558 states and 44447 transitions.
[2019-11-23 21:08:34,414 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:34,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 40558 states and 44447 transitions.
[2019-11-23 21:08:34,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 400
[2019-11-23 21:08:34,424 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:34,425 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, 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, 1, 1, 1, 1, 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 21:08:34,425 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:34,425 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:34,425 INFO  L82        PathProgramCache]: Analyzing trace with hash 1054090476, now seen corresponding path program 1 times
[2019-11-23 21:08:34,426 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:34,426 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410125920]
[2019-11-23 21:08:34,426 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:34,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:34,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 440 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2019-11-23 21:08:34,689 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410125920]
[2019-11-23 21:08:34,689 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:34,689 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:08:34,690 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650274213]
[2019-11-23 21:08:34,691 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:34,693 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:34,693 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:34,693 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:34,694 INFO  L87              Difference]: Start difference. First operand 40558 states and 44447 transitions. Second operand 4 states.
[2019-11-23 21:08:42,134 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:42,134 INFO  L93              Difference]: Finished difference Result 150957 states and 165946 transitions.
[2019-11-23 21:08:42,134 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:42,135 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 399
[2019-11-23 21:08:42,135 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:42,269 INFO  L225             Difference]: With dead ends: 150957
[2019-11-23 21:08:42,270 INFO  L226             Difference]: Without dead ends: 110401
[2019-11-23 21:08:42,313 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 21:08:42,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110401 states.
[2019-11-23 21:08:44,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110401 to 96132.
[2019-11-23 21:08:44,846 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 96132 states.
[2019-11-23 21:08:44,969 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96132 states to 96132 states and 105104 transitions.
[2019-11-23 21:08:44,970 INFO  L78                 Accepts]: Start accepts. Automaton has 96132 states and 105104 transitions. Word has length 399
[2019-11-23 21:08:44,970 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:44,970 INFO  L462      AbstractCegarLoop]: Abstraction has 96132 states and 105104 transitions.
[2019-11-23 21:08:44,973 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:44,973 INFO  L276                IsEmpty]: Start isEmpty. Operand 96132 states and 105104 transitions.
[2019-11-23 21:08:44,998 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 582
[2019-11-23 21:08:44,998 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:44,999 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, 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, 4, 4, 4, 4, 4, 4, 4, 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]
[2019-11-23 21:08:44,999 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:44,999 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:45,000 INFO  L82        PathProgramCache]: Analyzing trace with hash -100827358, now seen corresponding path program 1 times
[2019-11-23 21:08:45,000 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:45,000 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091474897]
[2019-11-23 21:08:45,000 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:45,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:45,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 936 backedges. 769 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked.
[2019-11-23 21:08:45,748 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091474897]
[2019-11-23 21:08:45,748 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:45,748 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:08:45,748 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639630538]
[2019-11-23 21:08:45,749 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:45,749 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:45,750 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:45,750 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:45,750 INFO  L87              Difference]: Start difference. First operand 96132 states and 105104 transitions. Second operand 4 states.
[2019-11-23 21:08:52,534 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:52,535 INFO  L93              Difference]: Finished difference Result 237322 states and 260434 transitions.
[2019-11-23 21:08:52,535 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:52,535 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 581
[2019-11-23 21:08:52,536 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:52,675 INFO  L225             Difference]: With dead ends: 237322
[2019-11-23 21:08:52,675 INFO  L226             Difference]: Without dead ends: 141192
[2019-11-23 21:08:52,727 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 21:08:52,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141192 states.