/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_label16.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 21:07:32,424 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-23 21:07:32,426 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-11-23 21:07:32,512 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 21:07:32,533 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 21:07:32,533 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 21:07:32,535 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 21:07:32,536 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 21:07:32,536 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 21:07:32,536 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 21:07:32,536 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 21:07:32,537 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 21:07:32,537 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 21:07:32,537 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 21:07:32,538 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 21:07:32,538 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 21:07:32,539 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 21:07:32,539 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 21:07:32,539 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 21:07:32,539 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 21:07:32,540 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 21:07:32,540 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 21:07:32,540 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 21:07:32,540 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 21:07:32,540 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 21:07:32,541 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 21:07:32,541 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 21:07:32,541 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 21:07:32,541 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 21:07:32,541 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 21:07:32,542 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 21:07:32,542 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 21:07:32,542 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 21:07:32,542 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 21:07:32,841 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 21:07:32,855 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 21:07:32,858 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 21:07:32,860 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 21:07:32,860 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 21:07:32,861 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c
[2019-11-23 21:07:32,924 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8bc4316/4145c7beeffe46a39a3e59004970f86e/FLAG259bf96d1
[2019-11-23 21:07:33,668 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 21:07:33,669 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c
[2019-11-23 21:07:33,699 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8bc4316/4145c7beeffe46a39a3e59004970f86e/FLAG259bf96d1
[2019-11-23 21:07:33,775 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8bc4316/4145c7beeffe46a39a3e59004970f86e
[2019-11-23 21:07:33,786 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 21:07:33,788 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 21:07:33,791 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 21:07:33,791 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 21:07:33,795 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 21:07:33,796 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:07:33" (1/1) ...
[2019-11-23 21:07:33,799 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a06d2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:33, skipping insertion in model container
[2019-11-23 21:07:33,800 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:07:33" (1/1) ...
[2019-11-23 21:07:33,809 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 21:07:33,971 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 21:07:35,585 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:07:35,593 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 21:07:36,216 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:07:36,262 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 21:07:36,264 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:07:36 WrapperNode
[2019-11-23 21:07:36,264 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 21:07:36,266 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 21:07:36,266 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 21:07:36,266 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 21:07:36,280 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 21:07:36,361 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 21:07:36,754 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 21:07:36,755 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 21:07:36,755 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 21:07:36,755 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 21:07:36,769 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 21:07:36,770 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 21:07:36,821 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 21:07:36,821 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 21:07:37,177 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 21:07:37,209 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 21:07:37,250 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 21:07:37,294 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 21:07:37,294 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 21:07:37,294 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 21:07:37,295 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 21:07:37,296 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 21:07:37,370 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 21:07:37,370 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 21:07:42,707 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 21:07:42,707 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 21:07:42,709 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:07:42 BoogieIcfgContainer
[2019-11-23 21:07:42,709 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 21:07:42,710 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 21:07:42,711 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 21:07:42,714 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 21:07:42,714 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:07:33" (1/3) ...
[2019-11-23 21:07:42,715 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dee9771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:07:42, skipping insertion in model container
[2019-11-23 21:07:42,715 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 21:07:42,716 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dee9771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:07:42, skipping insertion in model container
[2019-11-23 21:07:42,716 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:07:42" (3/3) ...
[2019-11-23 21:07:42,718 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label16.c
[2019-11-23 21:07:42,727 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 21:07:42,736 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 21:07:42,748 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 21:07:42,783 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 21:07:42,783 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 21:07:42,783 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 21:07:42,783 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 21:07:42,784 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 21:07:42,784 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 21:07:42,784 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 21:07:42,784 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 21:07:42,816 INFO  L276                IsEmpty]: Start isEmpty. Operand 818 states.
[2019-11-23 21:07:42,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2019-11-23 21:07:42,826 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:07:42,827 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, 1]
[2019-11-23 21:07:42,828 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:07:42,834 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:07:42,834 INFO  L82        PathProgramCache]: Analyzing trace with hash 962891993, now seen corresponding path program 1 times
[2019-11-23 21:07:42,844 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:07:42,844 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206646109]
[2019-11-23 21:07:42,844 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:07:42,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:07:43,439 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 21:07:43,440 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206646109]
[2019-11-23 21:07:43,440 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:07:43,441 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-23 21:07:43,442 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316027059]
[2019-11-23 21:07:43,448 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-23 21:07:43,448 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:07:43,466 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-23 21:07:43,467 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:07:43,470 INFO  L87              Difference]: Start difference. First operand 818 states. Second operand 6 states.
[2019-11-23 21:07:55,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:07:55,716 INFO  L93              Difference]: Finished difference Result 3142 states and 6130 transitions.
[2019-11-23 21:07:55,717 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-23 21:07:55,718 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 65
[2019-11-23 21:07:55,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:07:55,759 INFO  L225             Difference]: With dead ends: 3142
[2019-11-23 21:07:55,759 INFO  L226             Difference]: Without dead ends: 2257
[2019-11-23 21:07:55,768 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 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 21:07:55,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2257 states.
[2019-11-23 21:07:55,954 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257.
[2019-11-23 21:07:55,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2257 states.
[2019-11-23 21:07:55,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3553 transitions.
[2019-11-23 21:07:55,970 INFO  L78                 Accepts]: Start accepts. Automaton has 2257 states and 3553 transitions. Word has length 65
[2019-11-23 21:07:55,971 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:07:55,971 INFO  L462      AbstractCegarLoop]: Abstraction has 2257 states and 3553 transitions.
[2019-11-23 21:07:55,972 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-23 21:07:55,972 INFO  L276                IsEmpty]: Start isEmpty. Operand 2257 states and 3553 transitions.
[2019-11-23 21:07:55,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2019-11-23 21:07:55,984 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:07:55,985 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:07:55,986 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:07:55,986 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:07:55,986 INFO  L82        PathProgramCache]: Analyzing trace with hash -394335157, now seen corresponding path program 1 times
[2019-11-23 21:07:55,986 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:07:55,987 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242194051]
[2019-11-23 21:07:55,987 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:07:56,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:07:56,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:07:56,386 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242194051]
[2019-11-23 21:07:56,386 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129646606]
[2019-11-23 21:07:56,386 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 21:07:56,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:07:56,466 INFO  L255         TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:07:56,480 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:07:56,532 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:07:56,533 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:07:56,533 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:07:56,534 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886261423]
[2019-11-23 21:07:56,535 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:07:56,536 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:07:56,536 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:07:56,536 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:07:56,536 INFO  L87              Difference]: Start difference. First operand 2257 states and 3553 transitions. Second operand 3 states.
[2019-11-23 21:08:01,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:01,385 INFO  L93              Difference]: Finished difference Result 6014 states and 9879 transitions.
[2019-11-23 21:08:01,385 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:01,385 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 136
[2019-11-23 21:08:01,386 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:01,406 INFO  L225             Difference]: With dead ends: 6014
[2019-11-23 21:08:01,406 INFO  L226             Difference]: Without dead ends: 3759
[2019-11-23 21:08:01,411 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 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 21:08:01,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3759 states.
[2019-11-23 21:08:01,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759.
[2019-11-23 21:08:01,481 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3759 states.
[2019-11-23 21:08:01,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5475 transitions.
[2019-11-23 21:08:01,488 INFO  L78                 Accepts]: Start accepts. Automaton has 3759 states and 5475 transitions. Word has length 136
[2019-11-23 21:08:01,491 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:01,491 INFO  L462      AbstractCegarLoop]: Abstraction has 3759 states and 5475 transitions.
[2019-11-23 21:08:01,492 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:01,492 INFO  L276                IsEmpty]: Start isEmpty. Operand 3759 states and 5475 transitions.
[2019-11-23 21:08:01,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 214
[2019-11-23 21:08:01,502 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:01,503 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:08:01,707 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:01,707 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:01,708 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:01,710 INFO  L82        PathProgramCache]: Analyzing trace with hash 90492936, now seen corresponding path program 1 times
[2019-11-23 21:08:01,710 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:01,711 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772364904]
[2019-11-23 21:08:01,711 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:01,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:02,049 INFO  L134       CoverageAnalysis]: Checked inductivity of 195 backedges. 162 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2019-11-23 21:08:02,050 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772364904]
[2019-11-23 21:08:02,050 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708323969]
[2019-11-23 21:08:02,050 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 21:08:02,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:02,155 INFO  L255         TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:02,178 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:02,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:08:02,254 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:02,257 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:08:02,257 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720044466]
[2019-11-23 21:08:02,260 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:02,260 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:02,260 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:02,261 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:02,261 INFO  L87              Difference]: Start difference. First operand 3759 states and 5475 transitions. Second operand 3 states.
[2019-11-23 21:08:06,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:06,848 INFO  L93              Difference]: Finished difference Result 10520 states and 15645 transitions.
[2019-11-23 21:08:06,848 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:06,849 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 213
[2019-11-23 21:08:06,850 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:06,881 INFO  L225             Difference]: With dead ends: 10520
[2019-11-23 21:08:06,882 INFO  L226             Difference]: Without dead ends: 6763
[2019-11-23 21:08:06,888 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:06,897 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6763 states.
[2019-11-23 21:08:07,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012.
[2019-11-23 21:08:07,089 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6012 states.
[2019-11-23 21:08:07,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 8545 transitions.
[2019-11-23 21:08:07,105 INFO  L78                 Accepts]: Start accepts. Automaton has 6012 states and 8545 transitions. Word has length 213
[2019-11-23 21:08:07,106 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:07,106 INFO  L462      AbstractCegarLoop]: Abstraction has 6012 states and 8545 transitions.
[2019-11-23 21:08:07,106 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:07,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 6012 states and 8545 transitions.
[2019-11-23 21:08:07,112 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 241
[2019-11-23 21:08:07,112 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:07,112 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, 3, 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]
[2019-11-23 21:08:07,316 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:07,316 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:07,316 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:07,316 INFO  L82        PathProgramCache]: Analyzing trace with hash 729840978, now seen corresponding path program 1 times
[2019-11-23 21:08:07,317 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:07,318 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104457155]
[2019-11-23 21:08:07,318 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:07,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:07,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 195 backedges. 162 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2019-11-23 21:08:07,706 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104457155]
[2019-11-23 21:08:07,707 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000126801]
[2019-11-23 21:08:07,707 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 21:08:07,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:07,830 INFO  L255         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:07,834 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:07,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 195 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2019-11-23 21:08:07,919 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:07,919 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:08:07,920 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865596463]
[2019-11-23 21:08:07,920 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:07,921 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:07,921 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:07,921 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:07,921 INFO  L87              Difference]: Start difference. First operand 6012 states and 8545 transitions. Second operand 3 states.
[2019-11-23 21:08:12,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:12,860 INFO  L93              Difference]: Finished difference Result 17279 states and 24855 transitions.
[2019-11-23 21:08:12,861 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:12,862 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 240
[2019-11-23 21:08:12,862 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:12,900 INFO  L225             Difference]: With dead ends: 17279
[2019-11-23 21:08:12,901 INFO  L226             Difference]: Without dead ends: 11269
[2019-11-23 21:08:12,911 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:12,924 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11269 states.
[2019-11-23 21:08:13,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 10518.
[2019-11-23 21:08:13,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10518 states.
[2019-11-23 21:08:13,106 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 13897 transitions.
[2019-11-23 21:08:13,106 INFO  L78                 Accepts]: Start accepts. Automaton has 10518 states and 13897 transitions. Word has length 240
[2019-11-23 21:08:13,107 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:13,107 INFO  L462      AbstractCegarLoop]: Abstraction has 10518 states and 13897 transitions.
[2019-11-23 21:08:13,107 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:13,108 INFO  L276                IsEmpty]: Start isEmpty. Operand 10518 states and 13897 transitions.
[2019-11-23 21:08:13,116 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 276
[2019-11-23 21:08:13,117 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:13,117 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, 3, 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]
[2019-11-23 21:08:13,321 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:13,321 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:13,321 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:13,323 INFO  L82        PathProgramCache]: Analyzing trace with hash 193266245, now seen corresponding path program 1 times
[2019-11-23 21:08:13,325 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:13,325 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783814952]
[2019-11-23 21:08:13,326 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:13,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:13,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 176 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-11-23 21:08:13,897 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783814952]
[2019-11-23 21:08:13,897 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710754069]
[2019-11-23 21:08:13,897 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 21:08:13,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:13,985 INFO  L255         TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:08:13,989 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:14,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2019-11-23 21:08:14,074 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:14,074 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6
[2019-11-23 21:08:14,074 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39517483]
[2019-11-23 21:08:14,077 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:14,077 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:14,077 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:14,077 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:14,078 INFO  L87              Difference]: Start difference. First operand 10518 states and 13897 transitions. Second operand 3 states.
[2019-11-23 21:08:18,908 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:18,908 INFO  L93              Difference]: Finished difference Result 27793 states and 36303 transitions.
[2019-11-23 21:08:18,910 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:18,910 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 275
[2019-11-23 21:08:18,911 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:18,948 INFO  L225             Difference]: With dead ends: 27793
[2019-11-23 21:08:18,949 INFO  L226             Difference]: Without dead ends: 17277
[2019-11-23 21:08:18,961 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:08:18,980 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17277 states.
[2019-11-23 21:08:19,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 16526.
[2019-11-23 21:08:19,159 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16526 states.
[2019-11-23 21:08:19,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 19125 transitions.
[2019-11-23 21:08:19,178 INFO  L78                 Accepts]: Start accepts. Automaton has 16526 states and 19125 transitions. Word has length 275
[2019-11-23 21:08:19,178 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:19,178 INFO  L462      AbstractCegarLoop]: Abstraction has 16526 states and 19125 transitions.
[2019-11-23 21:08:19,179 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:19,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 16526 states and 19125 transitions.
[2019-11-23 21:08:19,186 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 350
[2019-11-23 21:08:19,187 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:19,187 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, 4, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-11-23 21:08:19,390 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:19,390 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:19,391 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:19,391 INFO  L82        PathProgramCache]: Analyzing trace with hash -1961195799, now seen corresponding path program 1 times
[2019-11-23 21:08:19,391 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:19,391 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062539137]
[2019-11-23 21:08:19,392 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:19,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:19,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 395 backedges. 264 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked.
[2019-11-23 21:08:19,822 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062539137]
[2019-11-23 21:08:19,822 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041307015]
[2019-11-23 21:08:19,822 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 21:08:19,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:19,943 INFO  L255         TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-11-23 21:08:19,948 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:08:20,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 395 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked.
[2019-11-23 21:08:20,079 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:08:20,079 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2019-11-23 21:08:20,080 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881042339]
[2019-11-23 21:08:20,081 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:20,081 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:20,081 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:20,082 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:08:20,091 INFO  L87              Difference]: Start difference. First operand 16526 states and 19125 transitions. Second operand 3 states.
[2019-11-23 21:08:22,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:22,871 INFO  L93              Difference]: Finished difference Result 32336 states and 37528 transitions.
[2019-11-23 21:08:22,871 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:22,872 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 349
[2019-11-23 21:08:22,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:22,897 INFO  L225             Difference]: With dead ends: 32336
[2019-11-23 21:08:22,898 INFO  L226             Difference]: Without dead ends: 16526
[2019-11-23 21:08:22,914 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 349 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 21:08:22,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16526 states.
[2019-11-23 21:08:23,099 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 16526.
[2019-11-23 21:08:23,099 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16526 states.
[2019-11-23 21:08:23,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 18573 transitions.
[2019-11-23 21:08:23,123 INFO  L78                 Accepts]: Start accepts. Automaton has 16526 states and 18573 transitions. Word has length 349
[2019-11-23 21:08:23,124 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:23,124 INFO  L462      AbstractCegarLoop]: Abstraction has 16526 states and 18573 transitions.
[2019-11-23 21:08:23,124 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:23,124 INFO  L276                IsEmpty]: Start isEmpty. Operand 16526 states and 18573 transitions.
[2019-11-23 21:08:23,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 361
[2019-11-23 21:08:23,135 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:23,135 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, 4, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-11-23 21:08:23,341 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:08:23,341 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:23,341 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:23,342 INFO  L82        PathProgramCache]: Analyzing trace with hash 246819730, now seen corresponding path program 1 times
[2019-11-23 21:08:23,342 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:23,342 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327599799]
[2019-11-23 21:08:23,342 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:23,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:23,553 INFO  L134       CoverageAnalysis]: Checked inductivity of 409 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2019-11-23 21:08:23,554 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327599799]
[2019-11-23 21:08:23,554 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:23,554 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:08:23,554 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998545442]
[2019-11-23 21:08:23,555 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:23,555 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:23,556 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:23,563 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:23,563 INFO  L87              Difference]: Start difference. First operand 16526 states and 18573 transitions. Second operand 4 states.
[2019-11-23 21:08:32,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:32,487 INFO  L93              Difference]: Finished difference Result 58584 states and 66453 transitions.
[2019-11-23 21:08:32,487 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:32,487 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 360
[2019-11-23 21:08:32,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:32,532 INFO  L225             Difference]: With dead ends: 58584
[2019-11-23 21:08:32,532 INFO  L226             Difference]: Without dead ends: 42811
[2019-11-23 21:08:32,552 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 21:08:32,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42811 states.
[2019-11-23 21:08:33,005 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42811 to 39807.
[2019-11-23 21:08:33,005 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 39807 states.
[2019-11-23 21:08:33,067 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39807 states to 39807 states and 44812 transitions.
[2019-11-23 21:08:33,067 INFO  L78                 Accepts]: Start accepts. Automaton has 39807 states and 44812 transitions. Word has length 360
[2019-11-23 21:08:33,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:33,068 INFO  L462      AbstractCegarLoop]: Abstraction has 39807 states and 44812 transitions.
[2019-11-23 21:08:33,068 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:33,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 39807 states and 44812 transitions.
[2019-11-23 21:08:33,076 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 365
[2019-11-23 21:08:33,076 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:33,077 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, 4, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-11-23 21:08:33,077 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:33,078 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:33,078 INFO  L82        PathProgramCache]: Analyzing trace with hash -595355556, now seen corresponding path program 1 times
[2019-11-23 21:08:33,078 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:33,079 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382120848]
[2019-11-23 21:08:33,079 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:33,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:33,468 INFO  L134       CoverageAnalysis]: Checked inductivity of 409 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2019-11-23 21:08:33,469 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382120848]
[2019-11-23 21:08:33,469 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:33,469 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:08:33,470 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199781745]
[2019-11-23 21:08:33,470 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:08:33,471 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:33,471 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:08:33,471 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:08:33,471 INFO  L87              Difference]: Start difference. First operand 39807 states and 44812 transitions. Second operand 3 states.
[2019-11-23 21:08:38,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:38,229 INFO  L93              Difference]: Finished difference Result 89375 states and 101104 transitions.
[2019-11-23 21:08:38,229 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:08:38,229 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 364
[2019-11-23 21:08:38,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:38,270 INFO  L225             Difference]: With dead ends: 89375
[2019-11-23 21:08:38,270 INFO  L226             Difference]: Without dead ends: 50321
[2019-11-23 21:08:38,289 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:08:38,330 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50321 states.
[2019-11-23 21:08:38,771 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50321 to 49570.
[2019-11-23 21:08:38,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 49570 states.
[2019-11-23 21:08:38,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49570 states to 49570 states and 54144 transitions.
[2019-11-23 21:08:38,831 INFO  L78                 Accepts]: Start accepts. Automaton has 49570 states and 54144 transitions. Word has length 364
[2019-11-23 21:08:38,831 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:38,831 INFO  L462      AbstractCegarLoop]: Abstraction has 49570 states and 54144 transitions.
[2019-11-23 21:08:38,831 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:08:38,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 49570 states and 54144 transitions.
[2019-11-23 21:08:38,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 397
[2019-11-23 21:08:38,841 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:38,842 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:38,842 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:38,842 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:38,842 INFO  L82        PathProgramCache]: Analyzing trace with hash 1192047628, now seen corresponding path program 1 times
[2019-11-23 21:08:38,843 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:38,843 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938473846]
[2019-11-23 21:08:38,843 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:38,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:39,183 INFO  L134       CoverageAnalysis]: Checked inductivity of 441 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked.
[2019-11-23 21:08:39,184 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938473846]
[2019-11-23 21:08:39,184 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:39,185 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:08:39,185 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969898538]
[2019-11-23 21:08:39,186 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:39,186 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:39,187 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:39,187 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:39,187 INFO  L87              Difference]: Start difference. First operand 49570 states and 54144 transitions. Second operand 4 states.
[2019-11-23 21:08:46,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:08:46,803 INFO  L93              Difference]: Finished difference Result 102142 states and 111342 transitions.
[2019-11-23 21:08:46,803 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:08:46,803 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 396
[2019-11-23 21:08:46,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:08:46,846 INFO  L225             Difference]: With dead ends: 102142
[2019-11-23 21:08:46,846 INFO  L226             Difference]: Without dead ends: 53325
[2019-11-23 21:08:46,872 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 21:08:46,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53325 states.
[2019-11-23 21:08:47,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53325 to 48068.
[2019-11-23 21:08:47,304 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 48068 states.
[2019-11-23 21:08:47,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48068 states to 48068 states and 52087 transitions.
[2019-11-23 21:08:47,340 INFO  L78                 Accepts]: Start accepts. Automaton has 48068 states and 52087 transitions. Word has length 396
[2019-11-23 21:08:47,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:08:47,340 INFO  L462      AbstractCegarLoop]: Abstraction has 48068 states and 52087 transitions.
[2019-11-23 21:08:47,340 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:08:47,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 48068 states and 52087 transitions.
[2019-11-23 21:08:47,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 501
[2019-11-23 21:08:47,355 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:08:47,356 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, 5, 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, 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]
[2019-11-23 21:08:47,356 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:08:47,356 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:08:47,357 INFO  L82        PathProgramCache]: Analyzing trace with hash -1420587283, now seen corresponding path program 1 times
[2019-11-23 21:08:47,357 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:08:47,357 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452337150]
[2019-11-23 21:08:47,357 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:08:47,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:08:47,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 794 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked.
[2019-11-23 21:08:47,907 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452337150]
[2019-11-23 21:08:47,908 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:08:47,908 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:08:47,908 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961621637]
[2019-11-23 21:08:47,909 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:08:47,910 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:08:47,910 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:08:47,910 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:08:47,911 INFO  L87              Difference]: Start difference. First operand 48068 states and 52087 transitions. Second operand 4 states.