/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 22:13:05,706 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 22:13:05,756 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
[2019-11-06 22:13:05,771 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 22:13:05,771 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 22:13:05,772 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 22:13:05,772 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 22:13:05,772 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 22:13:05,773 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 22:13:05,773 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 22:13:05,773 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 22:13:05,773 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 22:13:05,773 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 22:13:05,774 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 22:13:05,774 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 22:13:05,774 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 22:13:05,774 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 22:13:05,774 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 22:13:05,774 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 22:13:05,775 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 22:13:05,775 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 22:13:05,776 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 22:13:05,776 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 22:13:05,776 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 22:13:05,776 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:13:05,776 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 22:13:05,777 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 22:13:05,777 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 22:13:05,777 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 22:13:05,777 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 22:13:05,777 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 22:13:05,778 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 22:13:06,063 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 22:13:06,082 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 22:13:06,086 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 22:13:06,087 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 22:13:06,088 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 22:13:06,089 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-11-06 22:13:06,167 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd572d8ba/3393d48d8ee74825bec8819e9fb88e6b/FLAGc2290728f
[2019-11-06 22:13:06,782 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 22:13:06,783 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-11-06 22:13:06,798 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd572d8ba/3393d48d8ee74825bec8819e9fb88e6b/FLAGc2290728f
[2019-11-06 22:13:07,010 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd572d8ba/3393d48d8ee74825bec8819e9fb88e6b
[2019-11-06 22:13:07,019 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 22:13:07,020 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 22:13:07,021 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 22:13:07,022 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 22:13:07,025 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 22:13:07,026 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:07" (1/1) ...
[2019-11-06 22:13:07,029 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b914209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:07, skipping insertion in model container
[2019-11-06 22:13:07,030 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:07" (1/1) ...
[2019-11-06 22:13:07,037 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 22:13:07,114 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 22:13:07,760 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:13:07,791 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 22:13:08,238 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:13:08,258 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 22:13:08,259 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08 WrapperNode
[2019-11-06 22:13:08,259 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 22:13:08,260 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 22:13:08,260 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 22:13:08,260 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 22:13:08,271 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,271 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,289 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,289 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,318 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,340 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,346 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,354 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 22:13:08,355 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 22:13:08,355 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 22:13:08,355 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 22:13:08,356 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (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
[2019-11-06 22:13:08,436 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 22:13:08,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 22:13:08,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 22:13:08,437 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 22:13:08,437 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-11-06 22:13:08,437 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2019-11-06 22:13:08,438 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-11-06 22:13:08,438 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-11-06 22:13:08,438 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-11-06 22:13:08,438 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-11-06 22:13:08,438 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-11-06 22:13:08,439 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-11-06 22:13:08,439 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-11-06 22:13:08,439 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-11-06 22:13:08,439 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-11-06 22:13:08,439 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-11-06 22:13:08,440 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 22:13:08,440 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 22:13:08,440 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 22:13:10,064 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 22:13:10,064 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-06 22:13:10,066 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:10 BoogieIcfgContainer
[2019-11-06 22:13:10,066 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 22:13:10,068 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 22:13:10,068 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 22:13:10,071 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 22:13:10,071 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:07" (1/3) ...
[2019-11-06 22:13:10,073 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da7d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:10, skipping insertion in model container
[2019-11-06 22:13:10,074 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (2/3) ...
[2019-11-06 22:13:10,074 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da7d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:10, skipping insertion in model container
[2019-11-06 22:13:10,075 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:10" (3/3) ...
[2019-11-06 22:13:10,081 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-11-06 22:13:10,090 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 22:13:10,099 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-11-06 22:13:10,110 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-11-06 22:13:10,153 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 22:13:10,153 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 22:13:10,154 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 22:13:10,154 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 22:13:10,154 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 22:13:10,154 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 22:13:10,154 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 22:13:10,155 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 22:13:10,184 INFO  L276                IsEmpty]: Start isEmpty. Operand 393 states.
[2019-11-06 22:13:10,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-11-06 22:13:10,201 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:10,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:10,204 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:10,209 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:10,209 INFO  L82        PathProgramCache]: Analyzing trace with hash -378109419, now seen corresponding path program 1 times
[2019-11-06 22:13:10,216 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:10,216 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587773811]
[2019-11-06 22:13:10,217 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:10,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:11,225 WARN  L191               SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:11,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:11,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:11,331 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587773811]
[2019-11-06 22:13:11,332 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:11,332 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:11,335 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991663370]
[2019-11-06 22:13:11,343 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:11,343 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:11,359 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:11,360 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:11,363 INFO  L87              Difference]: Start difference. First operand 393 states. Second operand 5 states.
[2019-11-06 22:13:15,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:15,253 INFO  L93              Difference]: Finished difference Result 1140 states and 2047 transitions.
[2019-11-06 22:13:15,253 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-06 22:13:15,256 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 145
[2019-11-06 22:13:15,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:15,278 INFO  L225             Difference]: With dead ends: 1140
[2019-11-06 22:13:15,278 INFO  L226             Difference]: Without dead ends: 752
[2019-11-06 22:13:15,285 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:15,306 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 752 states.
[2019-11-06 22:13:15,404 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 726.
[2019-11-06 22:13:15,406 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 726 states.
[2019-11-06 22:13:15,409 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1035 transitions.
[2019-11-06 22:13:15,411 INFO  L78                 Accepts]: Start accepts. Automaton has 726 states and 1035 transitions. Word has length 145
[2019-11-06 22:13:15,412 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:15,412 INFO  L462      AbstractCegarLoop]: Abstraction has 726 states and 1035 transitions.
[2019-11-06 22:13:15,412 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:15,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 726 states and 1035 transitions.
[2019-11-06 22:13:15,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-11-06 22:13:15,417 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:15,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:15,418 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:15,418 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:15,419 INFO  L82        PathProgramCache]: Analyzing trace with hash 785847517, now seen corresponding path program 1 times
[2019-11-06 22:13:15,419 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:15,419 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432825166]
[2019-11-06 22:13:15,419 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:15,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:15,780 WARN  L191               SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:15,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:15,816 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:15,817 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432825166]
[2019-11-06 22:13:15,817 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:15,817 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:15,818 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598591344]
[2019-11-06 22:13:15,819 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:15,820 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:15,820 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:15,820 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:15,820 INFO  L87              Difference]: Start difference. First operand 726 states and 1035 transitions. Second operand 4 states.
[2019-11-06 22:13:17,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:17,612 INFO  L93              Difference]: Finished difference Result 2132 states and 3035 transitions.
[2019-11-06 22:13:17,613 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:17,613 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 146
[2019-11-06 22:13:17,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:17,621 INFO  L225             Difference]: With dead ends: 2132
[2019-11-06 22:13:17,621 INFO  L226             Difference]: Without dead ends: 1438
[2019-11-06 22:13:17,626 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:17,629 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1438 states.
[2019-11-06 22:13:17,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 728.
[2019-11-06 22:13:17,670 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 728 states.
[2019-11-06 22:13:17,673 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1037 transitions.
[2019-11-06 22:13:17,674 INFO  L78                 Accepts]: Start accepts. Automaton has 728 states and 1037 transitions. Word has length 146
[2019-11-06 22:13:17,674 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:17,674 INFO  L462      AbstractCegarLoop]: Abstraction has 728 states and 1037 transitions.
[2019-11-06 22:13:17,674 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:17,674 INFO  L276                IsEmpty]: Start isEmpty. Operand 728 states and 1037 transitions.
[2019-11-06 22:13:17,677 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-11-06 22:13:17,677 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:17,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:17,678 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:17,678 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:17,679 INFO  L82        PathProgramCache]: Analyzing trace with hash 615628916, now seen corresponding path program 1 times
[2019-11-06 22:13:17,679 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:17,679 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086784179]
[2019-11-06 22:13:17,679 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:17,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:18,236 WARN  L191               SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:18,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:18,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:18,298 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086784179]
[2019-11-06 22:13:18,298 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:18,299 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:18,299 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458588377]
[2019-11-06 22:13:18,300 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:18,300 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:18,300 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:18,301 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:18,301 INFO  L87              Difference]: Start difference. First operand 728 states and 1037 transitions. Second operand 5 states.
[2019-11-06 22:13:19,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:19,895 INFO  L93              Difference]: Finished difference Result 1438 states and 2049 transitions.
[2019-11-06 22:13:19,896 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:19,896 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 147
[2019-11-06 22:13:19,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:19,901 INFO  L225             Difference]: With dead ends: 1438
[2019-11-06 22:13:19,901 INFO  L226             Difference]: Without dead ends: 728
[2019-11-06 22:13:19,903 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:19,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 728 states.
[2019-11-06 22:13:19,944 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 727.
[2019-11-06 22:13:19,945 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 727 states.
[2019-11-06 22:13:19,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1034 transitions.
[2019-11-06 22:13:19,950 INFO  L78                 Accepts]: Start accepts. Automaton has 727 states and 1034 transitions. Word has length 147
[2019-11-06 22:13:19,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:19,950 INFO  L462      AbstractCegarLoop]: Abstraction has 727 states and 1034 transitions.
[2019-11-06 22:13:19,950 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:19,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 727 states and 1034 transitions.
[2019-11-06 22:13:19,955 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-11-06 22:13:19,955 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:19,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:19,956 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:19,956 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:19,956 INFO  L82        PathProgramCache]: Analyzing trace with hash 1544797217, now seen corresponding path program 1 times
[2019-11-06 22:13:19,957 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:19,957 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27854338]
[2019-11-06 22:13:19,957 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:19,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:20,422 WARN  L191               SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:20,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:20,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:20,501 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27854338]
[2019-11-06 22:13:20,501 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:20,501 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:20,502 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955049122]
[2019-11-06 22:13:20,503 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:20,503 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:20,503 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:20,505 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:20,505 INFO  L87              Difference]: Start difference. First operand 727 states and 1034 transitions. Second operand 4 states.
[2019-11-06 22:13:23,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:23,291 INFO  L93              Difference]: Finished difference Result 1957 states and 2793 transitions.
[2019-11-06 22:13:23,292 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:23,292 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 147
[2019-11-06 22:13:23,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:23,301 INFO  L225             Difference]: With dead ends: 1957
[2019-11-06 22:13:23,301 INFO  L226             Difference]: Without dead ends: 1409
[2019-11-06 22:13:23,302 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:23,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1409 states.
[2019-11-06 22:13:23,354 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1383.
[2019-11-06 22:13:23,355 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1383 states.
[2019-11-06 22:13:23,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1959 transitions.
[2019-11-06 22:13:23,360 INFO  L78                 Accepts]: Start accepts. Automaton has 1383 states and 1959 transitions. Word has length 147
[2019-11-06 22:13:23,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:23,360 INFO  L462      AbstractCegarLoop]: Abstraction has 1383 states and 1959 transitions.
[2019-11-06 22:13:23,360 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:23,361 INFO  L276                IsEmpty]: Start isEmpty. Operand 1383 states and 1959 transitions.
[2019-11-06 22:13:23,364 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-11-06 22:13:23,364 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:23,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:23,365 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:23,365 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:23,365 INFO  L82        PathProgramCache]: Analyzing trace with hash -1137007516, now seen corresponding path program 1 times
[2019-11-06 22:13:23,365 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:23,366 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589028211]
[2019-11-06 22:13:23,366 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:23,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:23,710 WARN  L191               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:23,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:23,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:23,748 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589028211]
[2019-11-06 22:13:23,748 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:23,748 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:23,749 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674997809]
[2019-11-06 22:13:23,749 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:23,749 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:23,750 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:23,750 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:23,750 INFO  L87              Difference]: Start difference. First operand 1383 states and 1959 transitions. Second operand 5 states.
[2019-11-06 22:13:25,331 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:25,331 INFO  L93              Difference]: Finished difference Result 2275 states and 3231 transitions.
[2019-11-06 22:13:25,332 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:25,332 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 147
[2019-11-06 22:13:25,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:25,339 INFO  L225             Difference]: With dead ends: 2275
[2019-11-06 22:13:25,339 INFO  L226             Difference]: Without dead ends: 1061
[2019-11-06 22:13:25,342 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:25,343 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1061 states.
[2019-11-06 22:13:25,382 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1061.
[2019-11-06 22:13:25,382 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1061 states.
[2019-11-06 22:13:25,385 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1494 transitions.
[2019-11-06 22:13:25,385 INFO  L78                 Accepts]: Start accepts. Automaton has 1061 states and 1494 transitions. Word has length 147
[2019-11-06 22:13:25,386 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:25,386 INFO  L462      AbstractCegarLoop]: Abstraction has 1061 states and 1494 transitions.
[2019-11-06 22:13:25,386 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:25,386 INFO  L276                IsEmpty]: Start isEmpty. Operand 1061 states and 1494 transitions.
[2019-11-06 22:13:25,389 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-11-06 22:13:25,389 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:25,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:25,390 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:25,390 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:25,390 INFO  L82        PathProgramCache]: Analyzing trace with hash 1811444338, now seen corresponding path program 1 times
[2019-11-06 22:13:25,390 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:25,390 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557475150]
[2019-11-06 22:13:25,391 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:25,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:25,702 WARN  L191               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:25,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:25,759 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:25,759 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557475150]
[2019-11-06 22:13:25,761 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:25,761 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:25,761 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937625287]
[2019-11-06 22:13:25,762 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:25,762 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:25,762 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:25,763 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:25,763 INFO  L87              Difference]: Start difference. First operand 1061 states and 1494 transitions. Second operand 4 states.
[2019-11-06 22:13:27,759 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:27,759 INFO  L93              Difference]: Finished difference Result 2751 states and 3920 transitions.
[2019-11-06 22:13:27,760 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:27,760 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 153
[2019-11-06 22:13:27,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:27,771 INFO  L225             Difference]: With dead ends: 2751
[2019-11-06 22:13:27,772 INFO  L226             Difference]: Without dead ends: 1942
[2019-11-06 22:13:27,778 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:27,781 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1942 states.
[2019-11-06 22:13:27,843 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1916.
[2019-11-06 22:13:27,844 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1916 states.
[2019-11-06 22:13:27,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2713 transitions.
[2019-11-06 22:13:27,858 INFO  L78                 Accepts]: Start accepts. Automaton has 1916 states and 2713 transitions. Word has length 153
[2019-11-06 22:13:27,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:27,858 INFO  L462      AbstractCegarLoop]: Abstraction has 1916 states and 2713 transitions.
[2019-11-06 22:13:27,859 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:27,859 INFO  L276                IsEmpty]: Start isEmpty. Operand 1916 states and 2713 transitions.
[2019-11-06 22:13:27,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-11-06 22:13:27,863 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:27,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:27,863 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:27,863 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:27,864 INFO  L82        PathProgramCache]: Analyzing trace with hash 404324973, now seen corresponding path program 1 times
[2019-11-06 22:13:27,864 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:27,864 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233681584]
[2019-11-06 22:13:27,864 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:27,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:28,566 WARN  L191               SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:28,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:28,654 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:28,654 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233681584]
[2019-11-06 22:13:28,654 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:28,655 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2019-11-06 22:13:28,655 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485979648]
[2019-11-06 22:13:28,655 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 14 states
[2019-11-06 22:13:28,656 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:28,656 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2019-11-06 22:13:28,656 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2019-11-06 22:13:28,656 INFO  L87              Difference]: Start difference. First operand 1916 states and 2713 transitions. Second operand 14 states.
[2019-11-06 22:13:28,983 WARN  L191               SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:13:32,882 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:32,882 INFO  L93              Difference]: Finished difference Result 7242 states and 11196 transitions.
[2019-11-06 22:13:32,882 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-11-06 22:13:32,882 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 153
[2019-11-06 22:13:32,883 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:32,909 INFO  L225             Difference]: With dead ends: 7242
[2019-11-06 22:13:32,910 INFO  L226             Difference]: Without dead ends: 5602
[2019-11-06 22:13:32,914 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552
[2019-11-06 22:13:32,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5602 states.
[2019-11-06 22:13:33,153 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 3296.
[2019-11-06 22:13:33,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3296 states.
[2019-11-06 22:13:33,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4983 transitions.
[2019-11-06 22:13:33,163 INFO  L78                 Accepts]: Start accepts. Automaton has 3296 states and 4983 transitions. Word has length 153
[2019-11-06 22:13:33,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:33,165 INFO  L462      AbstractCegarLoop]: Abstraction has 3296 states and 4983 transitions.
[2019-11-06 22:13:33,165 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2019-11-06 22:13:33,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 3296 states and 4983 transitions.
[2019-11-06 22:13:33,169 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-11-06 22:13:33,169 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:33,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:33,170 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:33,170 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:33,170 INFO  L82        PathProgramCache]: Analyzing trace with hash -685965993, now seen corresponding path program 1 times
[2019-11-06 22:13:33,171 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:33,171 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168826729]
[2019-11-06 22:13:33,171 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:33,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:33,615 WARN  L191               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:33,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:33,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:33,664 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168826729]
[2019-11-06 22:13:33,664 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:33,665 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-11-06 22:13:33,665 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507504479]
[2019-11-06 22:13:33,665 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 22:13:33,666 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:33,666 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 22:13:33,666 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2019-11-06 22:13:33,666 INFO  L87              Difference]: Start difference. First operand 3296 states and 4983 transitions. Second operand 9 states.
[2019-11-06 22:13:33,927 WARN  L191               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2019-11-06 22:13:35,907 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:35,908 INFO  L93              Difference]: Finished difference Result 6873 states and 10638 transitions.
[2019-11-06 22:13:35,908 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-06 22:13:35,908 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 153
[2019-11-06 22:13:35,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:35,927 INFO  L225             Difference]: With dead ends: 6873
[2019-11-06 22:13:35,927 INFO  L226             Difference]: Without dead ends: 4901
[2019-11-06 22:13:35,933 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2019-11-06 22:13:35,939 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4901 states.
[2019-11-06 22:13:36,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3984.
[2019-11-06 22:13:36,126 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3984 states.
[2019-11-06 22:13:36,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5886 transitions.
[2019-11-06 22:13:36,133 INFO  L78                 Accepts]: Start accepts. Automaton has 3984 states and 5886 transitions. Word has length 153
[2019-11-06 22:13:36,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:36,134 INFO  L462      AbstractCegarLoop]: Abstraction has 3984 states and 5886 transitions.
[2019-11-06 22:13:36,134 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 22:13:36,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 3984 states and 5886 transitions.
[2019-11-06 22:13:36,139 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-11-06 22:13:36,140 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:36,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:36,141 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:36,141 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:36,141 INFO  L82        PathProgramCache]: Analyzing trace with hash 1419709992, now seen corresponding path program 1 times
[2019-11-06 22:13:36,142 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:36,142 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275033716]
[2019-11-06 22:13:36,142 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:36,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:36,524 WARN  L191               SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:36,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:36,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:36,603 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275033716]
[2019-11-06 22:13:36,603 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:36,603 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:36,603 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443643603]
[2019-11-06 22:13:36,605 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:36,605 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:36,605 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:36,605 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:36,606 INFO  L87              Difference]: Start difference. First operand 3984 states and 5886 transitions. Second operand 5 states.
[2019-11-06 22:13:39,321 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:39,321 INFO  L93              Difference]: Finished difference Result 10383 states and 15339 transitions.
[2019-11-06 22:13:39,321 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:39,321 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 153
[2019-11-06 22:13:39,322 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:39,342 INFO  L225             Difference]: With dead ends: 10383
[2019-11-06 22:13:39,342 INFO  L226             Difference]: Without dead ends: 6426
[2019-11-06 22:13:39,350 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:39,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6426 states.
[2019-11-06 22:13:39,635 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6426 to 6404.
[2019-11-06 22:13:39,636 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6404 states.
[2019-11-06 22:13:39,642 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 9378 transitions.
[2019-11-06 22:13:39,643 INFO  L78                 Accepts]: Start accepts. Automaton has 6404 states and 9378 transitions. Word has length 153
[2019-11-06 22:13:39,643 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:39,643 INFO  L462      AbstractCegarLoop]: Abstraction has 6404 states and 9378 transitions.
[2019-11-06 22:13:39,643 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:39,643 INFO  L276                IsEmpty]: Start isEmpty. Operand 6404 states and 9378 transitions.
[2019-11-06 22:13:39,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2019-11-06 22:13:39,651 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:39,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:39,652 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:39,652 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:39,652 INFO  L82        PathProgramCache]: Analyzing trace with hash 1518674242, now seen corresponding path program 1 times
[2019-11-06 22:13:39,652 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:39,653 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294449186]
[2019-11-06 22:13:39,653 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:39,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:39,986 WARN  L191               SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-11-06 22:13:39,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:40,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:40,056 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294449186]
[2019-11-06 22:13:40,056 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:40,056 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:40,058 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382643978]
[2019-11-06 22:13:40,058 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:40,059 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:40,059 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:40,059 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:40,059 INFO  L87              Difference]: Start difference. First operand 6404 states and 9378 transitions. Second operand 4 states.