/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_label45.c


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This is Ultimate 0.1.24-6598664
[2019-11-23 21:08:59,903 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-23 21:08:59,905 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-11-23 21:08:59,952 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 21:08:59,967 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 21:08:59,968 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 21:08:59,969 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 21:08:59,969 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 21:08:59,969 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 21:08:59,969 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 21:08:59,970 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 21:08:59,970 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 21:08:59,970 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 21:08:59,970 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 21:08:59,970 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 21:08:59,971 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 21:08:59,971 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 21:08:59,971 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 21:08:59,971 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 21:08:59,971 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 21:08:59,972 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 21:08:59,972 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 21:08:59,972 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 21:08:59,972 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 21:08:59,972 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 21:08:59,973 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 21:08:59,973 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 21:08:59,973 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 21:08:59,973 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 21:08:59,973 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 21:08:59,974 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 21:08:59,974 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 21:08:59,974 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 21:08:59,974 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 21:09:00,260 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 21:09:00,280 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 21:09:00,283 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 21:09:00,285 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 21:09:00,285 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 21:09:00,286 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c
[2019-11-23 21:09:00,365 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a506d08a0/b0a07a3ed09c47c3a8ef9776fbe8af5a/FLAGb262f9df8
[2019-11-23 21:09:01,144 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 21:09:01,145 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45.c
[2019-11-23 21:09:01,173 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a506d08a0/b0a07a3ed09c47c3a8ef9776fbe8af5a/FLAGb262f9df8
[2019-11-23 21:09:01,188 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a506d08a0/b0a07a3ed09c47c3a8ef9776fbe8af5a
[2019-11-23 21:09:01,198 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 21:09:01,199 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 21:09:01,200 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 21:09:01,200 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 21:09:01,204 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 21:09:01,205 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,208 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353e9020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01, skipping insertion in model container
[2019-11-23 21:09:01,208 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,215 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 21:09:01,334 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 21:09:02,753 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:09:02,760 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 21:09:03,458 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:09:03,486 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 21:09:03,486 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03 WrapperNode
[2019-11-23 21:09:03,487 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 21:09:03,487 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 21:09:03,488 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 21:09:03,488 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 21:09:03,497 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:03,553 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:03,820 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 21:09:03,821 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 21:09:03,821 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 21:09:03,821 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 21:09:03,831 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:03,831 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:03,857 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:03,857 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:04,113 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:04,174 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:04,216 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
[2019-11-23 21:09:04,254 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 21:09:04,254 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 21:09:04,254 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 21:09:04,255 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 21:09:04,256 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 21:09:04,326 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 21:09:04,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 21:09:09,718 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 21:09:09,718 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 21:09:09,720 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:09 BoogieIcfgContainer
[2019-11-23 21:09:09,720 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 21:09:09,721 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 21:09:09,722 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 21:09:09,725 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 21:09:09,725 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:01" (1/3) ...
[2019-11-23 21:09:09,726 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52332746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:09, skipping insertion in model container
[2019-11-23 21:09:09,726 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:03" (2/3) ...
[2019-11-23 21:09:09,727 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52332746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:09, skipping insertion in model container
[2019-11-23 21:09:09,727 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:09" (3/3) ...
[2019-11-23 21:09:09,729 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label45.c
[2019-11-23 21:09:09,740 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 21:09:09,754 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 21:09:09,765 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 21:09:09,815 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 21:09:09,816 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 21:09:09,816 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 21:09:09,816 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 21:09:09,816 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 21:09:09,817 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 21:09:09,817 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 21:09:09,817 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 21:09:09,851 INFO  L276                IsEmpty]: Start isEmpty. Operand 818 states.
[2019-11-23 21:09:09,860 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2019-11-23 21:09:09,860 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:09,861 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]
[2019-11-23 21:09:09,861 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:09,867 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:09,868 INFO  L82        PathProgramCache]: Analyzing trace with hash 2122806209, now seen corresponding path program 1 times
[2019-11-23 21:09:09,877 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:09,877 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680060902]
[2019-11-23 21:09:09,878 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:09,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:10,205 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 21:09:10,206 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680060902]
[2019-11-23 21:09:10,207 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:10,207 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:09:10,209 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67586187]
[2019-11-23 21:09:10,214 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:10,215 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:10,228 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:10,230 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:10,232 INFO  L87              Difference]: Start difference. First operand 818 states. Second operand 4 states.
[2019-11-23 21:09:18,253 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:18,254 INFO  L93              Difference]: Finished difference Result 3142 states and 6130 transitions.
[2019-11-23 21:09:18,255 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:18,256 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 51
[2019-11-23 21:09:18,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:18,290 INFO  L225             Difference]: With dead ends: 3142
[2019-11-23 21:09:18,290 INFO  L226             Difference]: Without dead ends: 2257
[2019-11-23 21:09:18,299 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 21:09:18,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2257 states.
[2019-11-23 21:09:18,439 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257.
[2019-11-23 21:09:18,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2257 states.
[2019-11-23 21:09:18,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3685 transitions.
[2019-11-23 21:09:18,452 INFO  L78                 Accepts]: Start accepts. Automaton has 2257 states and 3685 transitions. Word has length 51
[2019-11-23 21:09:18,453 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:18,453 INFO  L462      AbstractCegarLoop]: Abstraction has 2257 states and 3685 transitions.
[2019-11-23 21:09:18,453 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:18,453 INFO  L276                IsEmpty]: Start isEmpty. Operand 2257 states and 3685 transitions.
[2019-11-23 21:09:18,463 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2019-11-23 21:09:18,463 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:18,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:18,465 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:18,465 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:18,465 INFO  L82        PathProgramCache]: Analyzing trace with hash -1988888109, now seen corresponding path program 1 times
[2019-11-23 21:09:18,465 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:18,466 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432588194]
[2019-11-23 21:09:18,466 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:18,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:18,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:18,696 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432588194]
[2019-11-23 21:09:18,696 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:18,697 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:09:18,697 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84078466]
[2019-11-23 21:09:18,698 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:18,699 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:18,699 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:18,699 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:18,700 INFO  L87              Difference]: Start difference. First operand 2257 states and 3685 transitions. Second operand 4 states.
[2019-11-23 21:09:26,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:26,162 INFO  L93              Difference]: Finished difference Result 9018 states and 14732 transitions.
[2019-11-23 21:09:26,168 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:26,168 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 122
[2019-11-23 21:09:26,169 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:26,207 INFO  L225             Difference]: With dead ends: 9018
[2019-11-23 21:09:26,207 INFO  L226             Difference]: Without dead ends: 6763
[2019-11-23 21:09:26,212 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:09:26,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6763 states.
[2019-11-23 21:09:26,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763.
[2019-11-23 21:09:26,328 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6763 states.
[2019-11-23 21:09:26,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9493 transitions.
[2019-11-23 21:09:26,342 INFO  L78                 Accepts]: Start accepts. Automaton has 6763 states and 9493 transitions. Word has length 122
[2019-11-23 21:09:26,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:26,344 INFO  L462      AbstractCegarLoop]: Abstraction has 6763 states and 9493 transitions.
[2019-11-23 21:09:26,345 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:26,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 6763 states and 9493 transitions.
[2019-11-23 21:09:26,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2019-11-23 21:09:26,358 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:26,358 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, 2, 2, 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]
[2019-11-23 21:09:26,358 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:26,358 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:26,359 INFO  L82        PathProgramCache]: Analyzing trace with hash 80776777, now seen corresponding path program 1 times
[2019-11-23 21:09:26,359 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:26,359 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350318496]
[2019-11-23 21:09:26,359 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:26,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:26,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 170 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2019-11-23 21:09:26,663 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350318496]
[2019-11-23 21:09:26,664 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:26,664 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:09:26,664 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765795825]
[2019-11-23 21:09:26,667 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:26,668 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:26,668 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:26,669 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:26,669 INFO  L87              Difference]: Start difference. First operand 6763 states and 9493 transitions. Second operand 4 states.
[2019-11-23 21:09:33,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:33,295 INFO  L93              Difference]: Finished difference Result 15777 states and 22341 transitions.
[2019-11-23 21:09:33,295 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:33,295 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 231
[2019-11-23 21:09:33,296 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:33,331 INFO  L225             Difference]: With dead ends: 15777
[2019-11-23 21:09:33,331 INFO  L226             Difference]: Without dead ends: 9016
[2019-11-23 21:09:33,340 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:33,349 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9016 states.
[2019-11-23 21:09:33,481 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016.
[2019-11-23 21:09:33,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9016 states.
[2019-11-23 21:09:33,502 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11368 transitions.
[2019-11-23 21:09:33,503 INFO  L78                 Accepts]: Start accepts. Automaton has 9016 states and 11368 transitions. Word has length 231
[2019-11-23 21:09:33,503 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:33,503 INFO  L462      AbstractCegarLoop]: Abstraction has 9016 states and 11368 transitions.
[2019-11-23 21:09:33,504 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:33,504 INFO  L276                IsEmpty]: Start isEmpty. Operand 9016 states and 11368 transitions.
[2019-11-23 21:09:33,509 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 243
[2019-11-23 21:09:33,509 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:33,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-11-23 21:09:33,510 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:33,510 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:33,510 INFO  L82        PathProgramCache]: Analyzing trace with hash 314213954, now seen corresponding path program 1 times
[2019-11-23 21:09:33,511 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:33,511 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104320942]
[2019-11-23 21:09:33,511 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:33,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:33,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 181 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2019-11-23 21:09:33,793 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104320942]
[2019-11-23 21:09:33,793 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:33,793 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:09:33,793 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363173973]
[2019-11-23 21:09:33,794 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:33,794 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:33,794 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:33,795 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:33,795 INFO  L87              Difference]: Start difference. First operand 9016 states and 11368 transitions. Second operand 4 states.
[2019-11-23 21:09:41,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:41,275 INFO  L93              Difference]: Finished difference Result 36054 states and 45464 transitions.
[2019-11-23 21:09:41,276 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:41,276 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 242
[2019-11-23 21:09:41,276 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:41,343 INFO  L225             Difference]: With dead ends: 36054
[2019-11-23 21:09:41,343 INFO  L226             Difference]: Without dead ends: 27040
[2019-11-23 21:09:41,355 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:41,382 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27040 states.
[2019-11-23 21:09:41,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 18028.
[2019-11-23 21:09:41,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18028 states.
[2019-11-23 21:09:41,645 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 21262 transitions.
[2019-11-23 21:09:41,645 INFO  L78                 Accepts]: Start accepts. Automaton has 18028 states and 21262 transitions. Word has length 242
[2019-11-23 21:09:41,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:41,646 INFO  L462      AbstractCegarLoop]: Abstraction has 18028 states and 21262 transitions.
[2019-11-23 21:09:41,647 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:41,647 INFO  L276                IsEmpty]: Start isEmpty. Operand 18028 states and 21262 transitions.
[2019-11-23 21:09:41,654 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 311
[2019-11-23 21:09:41,654 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:41,654 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:41,654 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:41,655 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:41,655 INFO  L82        PathProgramCache]: Analyzing trace with hash 1515286383, now seen corresponding path program 1 times
[2019-11-23 21:09:41,655 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:41,657 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463755296]
[2019-11-23 21:09:41,657 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:41,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:42,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 368 backedges. 252 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2019-11-23 21:09:42,045 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463755296]
[2019-11-23 21:09:42,046 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693073139]
[2019-11-23 21:09:42,046 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 21:09:42,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:42,186 INFO  L255         TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:09:42,199 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:09:42,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 368 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2019-11-23 21:09:42,418 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:09:42,418 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:09:42,419 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045097045]
[2019-11-23 21:09:42,419 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:09:42,419 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:42,420 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:09:42,420 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:09:42,420 INFO  L87              Difference]: Start difference. First operand 18028 states and 21262 transitions. Second operand 3 states.
[2019-11-23 21:09:47,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:47,059 INFO  L93              Difference]: Finished difference Result 51074 states and 60267 transitions.
[2019-11-23 21:09:47,059 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:09:47,059 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 310
[2019-11-23 21:09:47,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:47,107 INFO  L225             Difference]: With dead ends: 51074
[2019-11-23 21:09:47,107 INFO  L226             Difference]: Without dead ends: 28542
[2019-11-23 21:09:47,130 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 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 21:09:47,158 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28542 states.
[2019-11-23 21:09:47,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28542 to 26289.
[2019-11-23 21:09:47,487 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26289 states.
[2019-11-23 21:09:47,522 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26289 states to 26289 states and 29463 transitions.
[2019-11-23 21:09:47,522 INFO  L78                 Accepts]: Start accepts. Automaton has 26289 states and 29463 transitions. Word has length 310
[2019-11-23 21:09:47,523 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:47,523 INFO  L462      AbstractCegarLoop]: Abstraction has 26289 states and 29463 transitions.
[2019-11-23 21:09:47,523 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:09:47,523 INFO  L276                IsEmpty]: Start isEmpty. Operand 26289 states and 29463 transitions.
[2019-11-23 21:09:47,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 458
[2019-11-23 21:09:47,541 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:47,542 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:47,754 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:09:47,754 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:47,755 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:47,755 INFO  L82        PathProgramCache]: Analyzing trace with hash 1137318877, now seen corresponding path program 1 times
[2019-11-23 21:09:47,755 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:47,756 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392133307]
[2019-11-23 21:09:47,756 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:47,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:48,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 690 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked.
[2019-11-23 21:09:48,204 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392133307]
[2019-11-23 21:09:48,204 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:48,204 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:09:48,205 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425972758]
[2019-11-23 21:09:48,205 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:48,205 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:48,206 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:48,206 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:48,206 INFO  L87              Difference]: Start difference. First operand 26289 states and 29463 transitions. Second operand 4 states.
[2019-11-23 21:09:55,281 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:55,281 INFO  L93              Difference]: Finished difference Result 94632 states and 106265 transitions.
[2019-11-23 21:09:55,282 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:55,282 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 457
[2019-11-23 21:09:55,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:55,370 INFO  L225             Difference]: With dead ends: 94632
[2019-11-23 21:09:55,370 INFO  L226             Difference]: Without dead ends: 68345
[2019-11-23 21:09:55,407 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 21:09:55,480 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68345 states.
[2019-11-23 21:09:56,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68345 to 60084.
[2019-11-23 21:09:56,353 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60084 states.
[2019-11-23 21:09:56,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60084 states to 60084 states and 67258 transitions.
[2019-11-23 21:09:56,423 INFO  L78                 Accepts]: Start accepts. Automaton has 60084 states and 67258 transitions. Word has length 457
[2019-11-23 21:09:56,423 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:56,423 INFO  L462      AbstractCegarLoop]: Abstraction has 60084 states and 67258 transitions.
[2019-11-23 21:09:56,424 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:56,424 INFO  L276                IsEmpty]: Start isEmpty. Operand 60084 states and 67258 transitions.
[2019-11-23 21:09:56,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 466
[2019-11-23 21:09:56,445 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:56,446 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:56,446 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:56,446 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:56,446 INFO  L82        PathProgramCache]: Analyzing trace with hash 240616430, now seen corresponding path program 1 times
[2019-11-23 21:09:56,447 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:56,447 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605275778]
[2019-11-23 21:09:56,447 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:56,515 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:56,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 443 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked.
[2019-11-23 21:09:56,807 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605275778]
[2019-11-23 21:09:56,807 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:56,808 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:09:56,808 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981235527]
[2019-11-23 21:09:56,809 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:56,809 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:56,810 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:56,810 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:56,810 INFO  L87              Difference]: Start difference. First operand 60084 states and 67258 transitions. Second operand 4 states.
[2019-11-23 21:10:04,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:10:04,436 INFO  L93              Difference]: Finished difference Result 127676 states and 142225 transitions.
[2019-11-23 21:10:04,436 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:10:04,437 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 465
[2019-11-23 21:10:04,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:10:04,521 INFO  L225             Difference]: With dead ends: 127676
[2019-11-23 21:10:04,521 INFO  L226             Difference]: Without dead ends: 67594
[2019-11-23 21:10:04,551 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 21:10:04,614 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67594 states.
[2019-11-23 21:10:05,128 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 61586.
[2019-11-23 21:10:05,128 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 61586 states.
[2019-11-23 21:10:05,176 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61586 states to 61586 states and 68022 transitions.
[2019-11-23 21:10:05,177 INFO  L78                 Accepts]: Start accepts. Automaton has 61586 states and 68022 transitions. Word has length 465
[2019-11-23 21:10:05,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:10:05,177 INFO  L462      AbstractCegarLoop]: Abstraction has 61586 states and 68022 transitions.
[2019-11-23 21:10:05,177 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:10:05,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 61586 states and 68022 transitions.
[2019-11-23 21:10:05,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 560
[2019-11-23 21:10:05,207 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:10:05,208 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:05,208 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:10:05,208 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:10:05,209 INFO  L82        PathProgramCache]: Analyzing trace with hash -515885921, now seen corresponding path program 1 times
[2019-11-23 21:10:05,209 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:10:05,209 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316206967]
[2019-11-23 21:10:05,209 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:10:05,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:10:07,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 443 backedges. 345 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:10:07,156 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316206967]
[2019-11-23 21:10:07,156 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752011647]
[2019-11-23 21:10:07,156 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 21:10:07,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:10:07,312 INFO  L255         TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-11-23 21:10:07,323 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:10:07,350 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-23 21:10:07,351 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-23 21:10:08,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 443 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked.
[2019-11-23 21:10:08,045 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:10:08,045 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-11-23 21:10:08,045 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813213250]
[2019-11-23 21:10:08,046 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:10:08,046 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:10:08,046 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:10:08,049 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-11-23 21:10:08,049 INFO  L87              Difference]: Start difference. First operand 61586 states and 68022 transitions. Second operand 4 states.
[2019-11-23 21:10:16,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:10:16,714 INFO  L93              Difference]: Finished difference Result 183252 states and 202722 transitions.
[2019-11-23 21:10:16,715 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:10:16,715 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 559
[2019-11-23 21:10:16,716 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:10:16,849 INFO  L225             Difference]: With dead ends: 183252
[2019-11-23 21:10:16,849 INFO  L226             Difference]: Without dead ends: 121668
[2019-11-23 21:10:16,903 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-11-23 21:10:17,043 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121668 states.
[2019-11-23 21:10:18,157 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121668 to 111152.
[2019-11-23 21:10:18,157 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 111152 states.
[2019-11-23 21:10:18,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 111152 states to 111152 states and 121888 transitions.
[2019-11-23 21:10:18,248 INFO  L78                 Accepts]: Start accepts. Automaton has 111152 states and 121888 transitions. Word has length 559
[2019-11-23 21:10:18,249 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:10:18,249 INFO  L462      AbstractCegarLoop]: Abstraction has 111152 states and 121888 transitions.
[2019-11-23 21:10:18,249 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:10:18,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 111152 states and 121888 transitions.
[2019-11-23 21:10:18,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 637
[2019-11-23 21:10:18,277 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:10:18,278 INFO  L410         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:18,479 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:10:18,480 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:10:18,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:10:18,481 INFO  L82        PathProgramCache]: Analyzing trace with hash 1478860484, now seen corresponding path program 1 times
[2019-11-23 21:10:18,481 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:10:18,482 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697609210]
[2019-11-23 21:10:18,482 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:10:18,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:10:18,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 1151 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked.
[2019-11-23 21:10:18,888 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697609210]
[2019-11-23 21:10:18,888 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:10:18,888 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:10:18,889 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880179089]
[2019-11-23 21:10:18,890 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:10:18,890 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:10:18,890 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:10:18,890 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:10:18,890 INFO  L87              Difference]: Start difference. First operand 111152 states and 121888 transitions. Second operand 4 states.