/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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 22:15:06,209 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 22:15:06,231 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-06 22:15:06,232 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2019-11-06 22:15:06,263 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2019-11-06 22:15:06,267 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-06 22:15:06,271 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2019-11-06 22:15:06,293 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-06 22:15:06,297 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 22:15:06,332 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 22:15:06,333 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 22:15:06,334 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 22:15:06,334 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 22:15:06,334 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 22:15:06,334 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 22:15:06,334 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 22:15:06,335 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 22:15:06,335 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 22:15:06,335 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 22:15:06,335 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 22:15:06,335 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 22:15:06,336 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 22:15:06,336 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 22:15:06,336 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 22:15:06,336 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 22:15:06,336 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 22:15:06,337 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 22:15:06,337 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 22:15:06,337 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 22:15:06,337 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 22:15:06,337 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:15:06,340 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 22:15:06,340 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 22:15:06,341 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 22:15:06,341 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 22:15:06,341 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 22:15:06,341 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 22:15:06,341 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 22:15:06,598 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 22:15:06,616 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 22:15:06,620 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 22:15:06,621 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 22:15:06,622 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 22:15:06,622 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-11-06 22:15:06,686 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f37213854/126ab6bac9a24ca1a6111d4785eded73/FLAG5c442721e
[2019-11-06 22:15:07,276 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 22:15:07,277 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-11-06 22:15:07,299 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f37213854/126ab6bac9a24ca1a6111d4785eded73/FLAG5c442721e
[2019-11-06 22:15:07,551 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f37213854/126ab6bac9a24ca1a6111d4785eded73
[2019-11-06 22:15:07,561 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 22:15:07,563 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 22:15:07,564 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 22:15:07,564 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 22:15:07,568 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 22:15:07,569 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:07" (1/1) ...
[2019-11-06 22:15:07,571 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad8c72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:07, skipping insertion in model container
[2019-11-06 22:15:07,572 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:07" (1/1) ...
[2019-11-06 22:15:07,580 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 22:15:07,661 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 22:15:08,294 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:15:08,307 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 22:15:08,759 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:15:08,779 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 22:15:08,780 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08 WrapperNode
[2019-11-06 22:15:08,780 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 22:15:08,781 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 22:15:08,781 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 22:15:08,781 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 22:15:08,791 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (1/1) ...
[2019-11-06 22:15:08,791 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (1/1) ...
[2019-11-06 22:15:08,812 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (1/1) ...
[2019-11-06 22:15:08,812 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (1/1) ...
[2019-11-06 22:15:08,844 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (1/1) ...
[2019-11-06 22:15:08,871 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (1/1) ...
[2019-11-06 22:15:08,878 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (1/1) ...
[2019-11-06 22:15:08,888 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 22:15:08,890 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 22:15:08,890 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 22:15:08,890 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 22:15:08,891 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (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 22:15:08,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 22:15:08,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 22:15:08,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 22:15:08,959 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 22:15:08,960 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-11-06 22:15:08,960 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2019-11-06 22:15:08,960 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-11-06 22:15:08,960 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-11-06 22:15:08,960 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-11-06 22:15:08,961 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-11-06 22:15:08,961 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-11-06 22:15:08,961 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-11-06 22:15:08,961 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-11-06 22:15:08,961 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-11-06 22:15:08,962 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-11-06 22:15:08,962 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-11-06 22:15:08,962 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 22:15:08,962 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 22:15:08,962 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 22:15:10,669 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 22:15:10,670 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-06 22:15:10,672 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:10 BoogieIcfgContainer
[2019-11-06 22:15:10,672 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 22:15:10,673 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 22:15:10,673 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 22:15:10,676 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 22:15:10,676 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:15:07" (1/3) ...
[2019-11-06 22:15:10,679 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfe3f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:10, skipping insertion in model container
[2019-11-06 22:15:10,679 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:08" (2/3) ...
[2019-11-06 22:15:10,679 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfe3f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:10, skipping insertion in model container
[2019-11-06 22:15:10,680 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:10" (3/3) ...
[2019-11-06 22:15:10,685 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-11-06 22:15:10,695 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 22:15:10,721 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-11-06 22:15:10,737 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-11-06 22:15:10,780 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 22:15:10,781 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 22:15:10,781 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 22:15:10,781 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 22:15:10,781 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 22:15:10,781 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 22:15:10,781 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 22:15:10,782 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 22:15:10,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 429 states.
[2019-11-06 22:15:10,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2019-11-06 22:15:10,843 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:10,844 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]
[2019-11-06 22:15:10,846 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:10,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:10,851 INFO  L82        PathProgramCache]: Analyzing trace with hash 598173108, now seen corresponding path program 1 times
[2019-11-06 22:15:10,860 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:10,860 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215805967]
[2019-11-06 22:15:10,861 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:11,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:12,054 WARN  L191               SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:12,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:12,151 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 22:15:12,152 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215805967]
[2019-11-06 22:15:12,153 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:12,153 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:12,156 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46073841]
[2019-11-06 22:15:12,162 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:12,163 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:12,176 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:12,177 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:12,179 INFO  L87              Difference]: Start difference. First operand 429 states. Second operand 5 states.
[2019-11-06 22:15:16,317 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:16,318 INFO  L93              Difference]: Finished difference Result 1245 states and 2212 transitions.
[2019-11-06 22:15:16,318 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-06 22:15:16,320 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 154
[2019-11-06 22:15:16,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:16,343 INFO  L225             Difference]: With dead ends: 1245
[2019-11-06 22:15:16,344 INFO  L226             Difference]: Without dead ends: 821
[2019-11-06 22:15:16,350 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:15:16,367 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 821 states.
[2019-11-06 22:15:16,452 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 794.
[2019-11-06 22:15:16,453 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 794 states.
[2019-11-06 22:15:16,457 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1136 transitions.
[2019-11-06 22:15:16,459 INFO  L78                 Accepts]: Start accepts. Automaton has 794 states and 1136 transitions. Word has length 154
[2019-11-06 22:15:16,459 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:16,460 INFO  L462      AbstractCegarLoop]: Abstraction has 794 states and 1136 transitions.
[2019-11-06 22:15:16,460 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:16,460 INFO  L276                IsEmpty]: Start isEmpty. Operand 794 states and 1136 transitions.
[2019-11-06 22:15:16,466 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2019-11-06 22:15:16,466 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:16,467 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 22:15:16,467 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:16,467 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:16,468 INFO  L82        PathProgramCache]: Analyzing trace with hash 1172332246, now seen corresponding path program 1 times
[2019-11-06 22:15:16,468 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:16,468 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39527144]
[2019-11-06 22:15:16,468 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:16,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:16,854 WARN  L191               SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:16,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:16,896 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 22:15:16,897 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39527144]
[2019-11-06 22:15:16,897 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:16,897 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:16,897 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062088166]
[2019-11-06 22:15:16,899 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:16,899 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:16,900 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:16,900 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:16,900 INFO  L87              Difference]: Start difference. First operand 794 states and 1136 transitions. Second operand 4 states.
[2019-11-06 22:15:20,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:20,437 INFO  L93              Difference]: Finished difference Result 2336 states and 3338 transitions.
[2019-11-06 22:15:20,437 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:20,437 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 155
[2019-11-06 22:15:20,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:20,453 INFO  L225             Difference]: With dead ends: 2336
[2019-11-06 22:15:20,453 INFO  L226             Difference]: Without dead ends: 1574
[2019-11-06 22:15:20,460 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 22:15:20,464 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1574 states.
[2019-11-06 22:15:20,552 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 796.
[2019-11-06 22:15:20,553 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 796 states.
[2019-11-06 22:15:20,558 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1138 transitions.
[2019-11-06 22:15:20,559 INFO  L78                 Accepts]: Start accepts. Automaton has 796 states and 1138 transitions. Word has length 155
[2019-11-06 22:15:20,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:20,561 INFO  L462      AbstractCegarLoop]: Abstraction has 796 states and 1138 transitions.
[2019-11-06 22:15:20,562 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:20,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 796 states and 1138 transitions.
[2019-11-06 22:15:20,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2019-11-06 22:15:20,574 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:20,575 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, 1]
[2019-11-06 22:15:20,576 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:20,577 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:20,577 INFO  L82        PathProgramCache]: Analyzing trace with hash 501625459, now seen corresponding path program 1 times
[2019-11-06 22:15:20,578 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:20,578 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332517233]
[2019-11-06 22:15:20,579 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:20,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:20,993 WARN  L191               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:20,998 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:21,047 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 22:15:21,047 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332517233]
[2019-11-06 22:15:21,048 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:21,048 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:21,048 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394055170]
[2019-11-06 22:15:21,049 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:21,049 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:21,050 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:21,050 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:21,050 INFO  L87              Difference]: Start difference. First operand 796 states and 1138 transitions. Second operand 4 states.
[2019-11-06 22:15:24,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:24,347 INFO  L93              Difference]: Finished difference Result 2139 states and 3061 transitions.
[2019-11-06 22:15:24,347 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:24,348 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 156
[2019-11-06 22:15:24,349 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:24,356 INFO  L225             Difference]: With dead ends: 2139
[2019-11-06 22:15:24,357 INFO  L226             Difference]: Without dead ends: 1540
[2019-11-06 22:15:24,359 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 22:15:24,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1540 states.
[2019-11-06 22:15:24,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1513.
[2019-11-06 22:15:24,414 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1513 states.
[2019-11-06 22:15:24,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2153 transitions.
[2019-11-06 22:15:24,420 INFO  L78                 Accepts]: Start accepts. Automaton has 1513 states and 2153 transitions. Word has length 156
[2019-11-06 22:15:24,420 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:24,420 INFO  L462      AbstractCegarLoop]: Abstraction has 1513 states and 2153 transitions.
[2019-11-06 22:15:24,421 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:24,421 INFO  L276                IsEmpty]: Start isEmpty. Operand 1513 states and 2153 transitions.
[2019-11-06 22:15:24,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2019-11-06 22:15:24,425 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:24,425 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, 1]
[2019-11-06 22:15:24,425 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:24,425 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:24,426 INFO  L82        PathProgramCache]: Analyzing trace with hash 104654224, now seen corresponding path program 1 times
[2019-11-06 22:15:24,426 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:24,426 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869035216]
[2019-11-06 22:15:24,426 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:24,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:24,795 WARN  L191               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:24,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:24,836 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 22:15:24,836 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869035216]
[2019-11-06 22:15:24,837 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:24,837 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:24,837 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287010638]
[2019-11-06 22:15:24,838 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:24,838 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:24,838 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:24,838 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:24,839 INFO  L87              Difference]: Start difference. First operand 1513 states and 2153 transitions. Second operand 5 states.
[2019-11-06 22:15:26,580 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:26,581 INFO  L93              Difference]: Finished difference Result 2489 states and 3549 transitions.
[2019-11-06 22:15:26,588 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:26,588 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 156
[2019-11-06 22:15:26,588 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:26,595 INFO  L225             Difference]: With dead ends: 2489
[2019-11-06 22:15:26,595 INFO  L226             Difference]: Without dead ends: 1161
[2019-11-06 22:15:26,598 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 22:15:26,601 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1161 states.
[2019-11-06 22:15:26,643 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161.
[2019-11-06 22:15:26,643 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1161 states.
[2019-11-06 22:15:26,647 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1645 transitions.
[2019-11-06 22:15:26,647 INFO  L78                 Accepts]: Start accepts. Automaton has 1161 states and 1645 transitions. Word has length 156
[2019-11-06 22:15:26,648 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:26,648 INFO  L462      AbstractCegarLoop]: Abstraction has 1161 states and 1645 transitions.
[2019-11-06 22:15:26,648 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:26,648 INFO  L276                IsEmpty]: Start isEmpty. Operand 1161 states and 1645 transitions.
[2019-11-06 22:15:26,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:15:26,651 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:26,651 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, 1, 1, 1]
[2019-11-06 22:15:26,652 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:26,652 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:26,652 INFO  L82        PathProgramCache]: Analyzing trace with hash -1233167963, now seen corresponding path program 1 times
[2019-11-06 22:15:26,652 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:26,653 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597267762]
[2019-11-06 22:15:26,653 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:26,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:26,993 WARN  L191               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:26,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:27,028 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 22:15:27,029 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597267762]
[2019-11-06 22:15:27,029 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:27,029 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:27,030 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448441030]
[2019-11-06 22:15:27,030 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:27,030 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:27,031 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:27,031 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:27,031 INFO  L87              Difference]: Start difference. First operand 1161 states and 1645 transitions. Second operand 4 states.
[2019-11-06 22:15:29,412 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:29,412 INFO  L93              Difference]: Finished difference Result 2522 states and 3657 transitions.
[2019-11-06 22:15:29,413 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:29,413 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 158
[2019-11-06 22:15:29,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:29,422 INFO  L225             Difference]: With dead ends: 2522
[2019-11-06 22:15:29,422 INFO  L226             Difference]: Without dead ends: 1547
[2019-11-06 22:15:29,424 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 22:15:29,426 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1547 states.
[2019-11-06 22:15:29,474 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1382.
[2019-11-06 22:15:29,475 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1382 states.
[2019-11-06 22:15:29,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2003 transitions.
[2019-11-06 22:15:29,479 INFO  L78                 Accepts]: Start accepts. Automaton has 1382 states and 2003 transitions. Word has length 158
[2019-11-06 22:15:29,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:29,480 INFO  L462      AbstractCegarLoop]: Abstraction has 1382 states and 2003 transitions.
[2019-11-06 22:15:29,480 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:29,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 1382 states and 2003 transitions.
[2019-11-06 22:15:29,483 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2019-11-06 22:15:29,483 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:29,483 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, 1, 1, 1, 1, 1]
[2019-11-06 22:15:29,484 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:29,484 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:29,484 INFO  L82        PathProgramCache]: Analyzing trace with hash -866694497, now seen corresponding path program 1 times
[2019-11-06 22:15:29,485 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:29,485 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467590235]
[2019-11-06 22:15:29,485 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:29,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:29,839 WARN  L191               SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:29,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:29,877 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 22:15:29,877 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467590235]
[2019-11-06 22:15:29,878 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:29,878 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:29,878 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310764143]
[2019-11-06 22:15:29,879 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:29,879 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:29,879 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:29,880 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:29,880 INFO  L87              Difference]: Start difference. First operand 1382 states and 2003 transitions. Second operand 4 states.
[2019-11-06 22:15:32,324 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:32,324 INFO  L93              Difference]: Finished difference Result 3110 states and 4621 transitions.
[2019-11-06 22:15:32,325 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:32,325 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 160
[2019-11-06 22:15:32,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:32,333 INFO  L225             Difference]: With dead ends: 3110
[2019-11-06 22:15:32,333 INFO  L226             Difference]: Without dead ends: 1998
[2019-11-06 22:15:32,336 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 22:15:32,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1998 states.
[2019-11-06 22:15:32,400 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1771.
[2019-11-06 22:15:32,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1771 states.
[2019-11-06 22:15:32,405 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2632 transitions.
[2019-11-06 22:15:32,406 INFO  L78                 Accepts]: Start accepts. Automaton has 1771 states and 2632 transitions. Word has length 160
[2019-11-06 22:15:32,406 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:32,406 INFO  L462      AbstractCegarLoop]: Abstraction has 1771 states and 2632 transitions.
[2019-11-06 22:15:32,406 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:32,407 INFO  L276                IsEmpty]: Start isEmpty. Operand 1771 states and 2632 transitions.
[2019-11-06 22:15:32,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2019-11-06 22:15:32,410 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:32,410 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, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:32,410 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:32,410 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:32,411 INFO  L82        PathProgramCache]: Analyzing trace with hash 753095009, now seen corresponding path program 1 times
[2019-11-06 22:15:32,411 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:32,411 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274258852]
[2019-11-06 22:15:32,411 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:32,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:33,042 WARN  L191               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:33,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:33,135 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 22:15:33,135 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274258852]
[2019-11-06 22:15:33,136 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:33,136 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2019-11-06 22:15:33,136 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468892452]
[2019-11-06 22:15:33,137 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 14 states
[2019-11-06 22:15:33,137 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:33,137 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2019-11-06 22:15:33,137 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182
[2019-11-06 22:15:33,138 INFO  L87              Difference]: Start difference. First operand 1771 states and 2632 transitions. Second operand 14 states.
[2019-11-06 22:15:33,473 WARN  L191               SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 209
[2019-11-06 22:15:39,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:39,287 INFO  L93              Difference]: Finished difference Result 14490 states and 22590 transitions.
[2019-11-06 22:15:39,288 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2019-11-06 22:15:39,288 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 161
[2019-11-06 22:15:39,288 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:39,337 INFO  L225             Difference]: With dead ends: 14490
[2019-11-06 22:15:39,337 INFO  L226             Difference]: Without dead ends: 12938
[2019-11-06 22:15:39,343 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332
[2019-11-06 22:15:39,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12938 states.
[2019-11-06 22:15:39,806 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12938 to 7935.
[2019-11-06 22:15:39,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7935 states.
[2019-11-06 22:15:39,819 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 12108 transitions.
[2019-11-06 22:15:39,820 INFO  L78                 Accepts]: Start accepts. Automaton has 7935 states and 12108 transitions. Word has length 161
[2019-11-06 22:15:39,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:39,820 INFO  L462      AbstractCegarLoop]: Abstraction has 7935 states and 12108 transitions.
[2019-11-06 22:15:39,820 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2019-11-06 22:15:39,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 7935 states and 12108 transitions.
[2019-11-06 22:15:39,827 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2019-11-06 22:15:39,827 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:39,827 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:39,827 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:39,828 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:39,828 INFO  L82        PathProgramCache]: Analyzing trace with hash -1464453224, now seen corresponding path program 1 times
[2019-11-06 22:15:39,828 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:39,828 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569836167]
[2019-11-06 22:15:39,828 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:39,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:40,343 WARN  L191               SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:40,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:40,444 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 22:15:40,445 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569836167]
[2019-11-06 22:15:40,445 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:40,445 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-11-06 22:15:40,446 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501859007]
[2019-11-06 22:15:40,447 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-11-06 22:15:40,447 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:40,447 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-11-06 22:15:40,448 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2019-11-06 22:15:40,448 INFO  L87              Difference]: Start difference. First operand 7935 states and 12108 transitions. Second operand 10 states.
[2019-11-06 22:15:40,777 WARN  L191               SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 205
[2019-11-06 22:15:43,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:43,227 INFO  L93              Difference]: Finished difference Result 11115 states and 17157 transitions.
[2019-11-06 22:15:43,228 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-11-06 22:15:43,228 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 161
[2019-11-06 22:15:43,228 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:43,243 INFO  L225             Difference]: With dead ends: 11115
[2019-11-06 22:15:43,243 INFO  L226             Difference]: Without dead ends: 3905
[2019-11-06 22:15:43,253 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2019-11-06 22:15:43,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3905 states.
[2019-11-06 22:15:43,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 2924.
[2019-11-06 22:15:43,401 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2924 states.
[2019-11-06 22:15:43,404 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 4420 transitions.
[2019-11-06 22:15:43,404 INFO  L78                 Accepts]: Start accepts. Automaton has 2924 states and 4420 transitions. Word has length 161
[2019-11-06 22:15:43,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:43,404 INFO  L462      AbstractCegarLoop]: Abstraction has 2924 states and 4420 transitions.
[2019-11-06 22:15:43,404 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2019-11-06 22:15:43,405 INFO  L276                IsEmpty]: Start isEmpty. Operand 2924 states and 4420 transitions.
[2019-11-06 22:15:43,408 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2019-11-06 22:15:43,408 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:43,408 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, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:43,409 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:43,409 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:43,409 INFO  L82        PathProgramCache]: Analyzing trace with hash -217483962, now seen corresponding path program 1 times
[2019-11-06 22:15:43,409 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:43,409 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728841433]
[2019-11-06 22:15:43,410 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:43,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:43,842 WARN  L191               SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-11-06 22:15:43,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:43,901 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 22:15:43,902 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728841433]
[2019-11-06 22:15:43,902 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:43,902 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-11-06 22:15:43,902 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311276012]
[2019-11-06 22:15:43,903 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-11-06 22:15:43,903 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:43,903 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-11-06 22:15:43,903 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2019-11-06 22:15:43,904 INFO  L87              Difference]: Start difference. First operand 2924 states and 4420 transitions. Second operand 10 states.