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


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 23:44:03,987 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 23:44:04,027 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2019-10-14 23:44:04,060 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
[2019-10-14 23:44:04,081 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 23:44:04,081 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 23:44:04,082 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 23:44:04,082 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 23:44:04,082 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 23:44:04,083 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 23:44:04,083 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 23:44:04,083 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 23:44:04,083 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 23:44:04,083 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 23:44:04,084 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 23:44:04,084 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 23:44:04,084 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 23:44:04,084 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 23:44:04,084 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 23:44:04,085 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 23:44:04,085 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 23:44:04,085 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 23:44:04,085 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 23:44:04,085 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 23:44:04,086 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 23:44:04,086 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 23:44:04,086 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 23:44:04,086 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 23:44:04,087 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 23:44:04,087 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 23:44:04,087 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 23:44:04,087 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 23:44:04,087 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 23:44:04,406 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 23:44:04,424 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 23:44:04,428 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 23:44:04,430 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 23:44:04,430 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 23:44:04,431 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-10-14 23:44:04,508 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacc00e60/73abf7e1af92479dbc568c6771db9654/FLAG2429d6a33
[2019-10-14 23:44:05,125 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 23:44:05,126 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-10-14 23:44:05,145 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacc00e60/73abf7e1af92479dbc568c6771db9654/FLAG2429d6a33
[2019-10-14 23:44:05,422 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacc00e60/73abf7e1af92479dbc568c6771db9654
[2019-10-14 23:44:05,434 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 23:44:05,436 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 23:44:05,441 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 23:44:05,441 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 23:44:05,445 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 23:44:05,446 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:05" (1/1) ...
[2019-10-14 23:44:05,449 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc4de7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:05, skipping insertion in model container
[2019-10-14 23:44:05,449 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:05" (1/1) ...
[2019-10-14 23:44:05,458 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 23:44:05,525 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 23:44:06,178 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 23:44:06,204 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 23:44:06,642 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 23:44:06,667 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 23:44:06,667 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06 WrapperNode
[2019-10-14 23:44:06,667 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 23:44:06,668 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 23:44:06,668 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 23:44:06,669 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 23:44:06,684 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (1/1) ...
[2019-10-14 23:44:06,684 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (1/1) ...
[2019-10-14 23:44:06,704 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (1/1) ...
[2019-10-14 23:44:06,705 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (1/1) ...
[2019-10-14 23:44:06,767 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (1/1) ...
[2019-10-14 23:44:06,792 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (1/1) ...
[2019-10-14 23:44:06,798 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (1/1) ...
[2019-10-14 23:44:06,808 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 23:44:06,808 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 23:44:06,809 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 23:44:06,809 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 23:44:06,810 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (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
[2019-10-14 23:44:06,904 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 23:44:06,905 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 23:44:06,905 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 23:44:06,905 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 23:44:06,906 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-10-14 23:44:06,906 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2019-10-14 23:44:06,906 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-10-14 23:44:06,906 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-10-14 23:44:06,907 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-10-14 23:44:06,907 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-10-14 23:44:06,907 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-10-14 23:44:06,907 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-10-14 23:44:06,908 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-10-14 23:44:06,908 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-10-14 23:44:06,908 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-10-14 23:44:06,908 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-10-14 23:44:06,909 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 23:44:06,909 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 23:44:06,909 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 23:44:08,725 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 23:44:08,725 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-10-14 23:44:08,727 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:08 BoogieIcfgContainer
[2019-10-14 23:44:08,727 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 23:44:08,729 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 23:44:08,729 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 23:44:08,732 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 23:44:08,732 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:05" (1/3) ...
[2019-10-14 23:44:08,733 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c00dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:08, skipping insertion in model container
[2019-10-14 23:44:08,733 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:06" (2/3) ...
[2019-10-14 23:44:08,734 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c00dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:08, skipping insertion in model container
[2019-10-14 23:44:08,735 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:08" (3/3) ...
[2019-10-14 23:44:08,736 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2019-10-14 23:44:08,747 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 23:44:08,756 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-10-14 23:44:08,768 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-10-14 23:44:08,799 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 23:44:08,799 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 23:44:08,800 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 23:44:08,800 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 23:44:08,800 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 23:44:08,800 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 23:44:08,800 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 23:44:08,801 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 23:44:08,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 393 states.
[2019-10-14 23:44:08,848 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-10-14 23:44:08,848 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:08,849 INFO  L380         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]
[2019-10-14 23:44:08,852 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:08,858 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:08,858 INFO  L82        PathProgramCache]: Analyzing trace with hash -378109419, now seen corresponding path program 1 times
[2019-10-14 23:44:08,868 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:08,868 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39119145]
[2019-10-14 23:44:08,869 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:08,869 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:08,869 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:09,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:10,081 WARN  L191               SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:10,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:10,169 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:10,170 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39119145]
[2019-10-14 23:44:10,170 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:10,171 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-14 23:44:10,171 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453434372]
[2019-10-14 23:44:10,178 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 23:44:10,178 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:10,192 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 23:44:10,194 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:10,197 INFO  L87              Difference]: Start difference. First operand 393 states. Second operand 5 states.
[2019-10-14 23:44:14,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:14,229 INFO  L93              Difference]: Finished difference Result 1140 states and 2047 transitions.
[2019-10-14 23:44:14,230 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-14 23:44:14,231 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 145
[2019-10-14 23:44:14,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:14,253 INFO  L225             Difference]: With dead ends: 1140
[2019-10-14 23:44:14,253 INFO  L226             Difference]: Without dead ends: 752
[2019-10-14 23:44:14,260 INFO  L600         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
[2019-10-14 23:44:14,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 752 states.
[2019-10-14 23:44:14,368 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 726.
[2019-10-14 23:44:14,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 726 states.
[2019-10-14 23:44:14,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1035 transitions.
[2019-10-14 23:44:14,378 INFO  L78                 Accepts]: Start accepts. Automaton has 726 states and 1035 transitions. Word has length 145
[2019-10-14 23:44:14,381 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:14,381 INFO  L462      AbstractCegarLoop]: Abstraction has 726 states and 1035 transitions.
[2019-10-14 23:44:14,381 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 23:44:14,382 INFO  L276                IsEmpty]: Start isEmpty. Operand 726 states and 1035 transitions.
[2019-10-14 23:44:14,394 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-10-14 23:44:14,394 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:14,395 INFO  L380         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]
[2019-10-14 23:44:14,395 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:14,395 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:14,396 INFO  L82        PathProgramCache]: Analyzing trace with hash 785847517, now seen corresponding path program 1 times
[2019-10-14 23:44:14,399 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:14,400 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293779513]
[2019-10-14 23:44:14,400 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:14,400 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:14,400 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:14,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:14,765 WARN  L191               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:14,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:14,800 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:14,801 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293779513]
[2019-10-14 23:44:14,801 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:14,802 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:14,802 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505729823]
[2019-10-14 23:44:14,804 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:14,804 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:14,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:14,805 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:14,805 INFO  L87              Difference]: Start difference. First operand 726 states and 1035 transitions. Second operand 4 states.
[2019-10-14 23:44:16,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:16,639 INFO  L93              Difference]: Finished difference Result 2132 states and 3035 transitions.
[2019-10-14 23:44:16,640 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-14 23:44:16,640 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 146
[2019-10-14 23:44:16,641 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:16,649 INFO  L225             Difference]: With dead ends: 2132
[2019-10-14 23:44:16,649 INFO  L226             Difference]: Without dead ends: 1438
[2019-10-14 23:44:16,653 INFO  L600         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
[2019-10-14 23:44:16,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1438 states.
[2019-10-14 23:44:16,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 728.
[2019-10-14 23:44:16,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 728 states.
[2019-10-14 23:44:16,705 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1037 transitions.
[2019-10-14 23:44:16,706 INFO  L78                 Accepts]: Start accepts. Automaton has 728 states and 1037 transitions. Word has length 146
[2019-10-14 23:44:16,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:16,706 INFO  L462      AbstractCegarLoop]: Abstraction has 728 states and 1037 transitions.
[2019-10-14 23:44:16,707 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:16,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 728 states and 1037 transitions.
[2019-10-14 23:44:16,710 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-10-14 23:44:16,710 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:16,710 INFO  L380         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]
[2019-10-14 23:44:16,711 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:16,711 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:16,711 INFO  L82        PathProgramCache]: Analyzing trace with hash 615628916, now seen corresponding path program 1 times
[2019-10-14 23:44:16,711 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:16,712 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448927395]
[2019-10-14 23:44:16,712 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:16,712 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:16,712 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:16,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:17,252 WARN  L191               SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:17,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:17,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:17,322 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448927395]
[2019-10-14 23:44:17,322 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:17,323 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-14 23:44:17,331 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584449669]
[2019-10-14 23:44:17,333 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 23:44:17,333 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:17,333 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 23:44:17,334 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:17,334 INFO  L87              Difference]: Start difference. First operand 728 states and 1037 transitions. Second operand 5 states.
[2019-10-14 23:44:19,130 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:19,131 INFO  L93              Difference]: Finished difference Result 1438 states and 2049 transitions.
[2019-10-14 23:44:19,131 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:19,132 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 147
[2019-10-14 23:44:19,132 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:19,136 INFO  L225             Difference]: With dead ends: 1438
[2019-10-14 23:44:19,136 INFO  L226             Difference]: Without dead ends: 728
[2019-10-14 23:44:19,138 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 23:44:19,139 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 728 states.
[2019-10-14 23:44:19,169 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 727.
[2019-10-14 23:44:19,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 727 states.
[2019-10-14 23:44:19,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1034 transitions.
[2019-10-14 23:44:19,173 INFO  L78                 Accepts]: Start accepts. Automaton has 727 states and 1034 transitions. Word has length 147
[2019-10-14 23:44:19,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:19,174 INFO  L462      AbstractCegarLoop]: Abstraction has 727 states and 1034 transitions.
[2019-10-14 23:44:19,174 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 23:44:19,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 727 states and 1034 transitions.
[2019-10-14 23:44:19,176 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-10-14 23:44:19,177 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:19,177 INFO  L380         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]
[2019-10-14 23:44:19,177 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:19,178 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:19,178 INFO  L82        PathProgramCache]: Analyzing trace with hash 1544797217, now seen corresponding path program 1 times
[2019-10-14 23:44:19,178 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:19,178 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197293875]
[2019-10-14 23:44:19,178 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:19,179 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:19,179 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:19,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:19,521 WARN  L191               SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:19,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:19,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:19,582 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197293875]
[2019-10-14 23:44:19,582 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:19,582 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:19,582 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185572753]
[2019-10-14 23:44:19,583 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:19,583 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:19,584 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:19,584 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:19,585 INFO  L87              Difference]: Start difference. First operand 727 states and 1034 transitions. Second operand 4 states.
[2019-10-14 23:44:22,408 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:22,409 INFO  L93              Difference]: Finished difference Result 1957 states and 2793 transitions.
[2019-10-14 23:44:22,410 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-14 23:44:22,410 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 147
[2019-10-14 23:44:22,410 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:22,418 INFO  L225             Difference]: With dead ends: 1957
[2019-10-14 23:44:22,419 INFO  L226             Difference]: Without dead ends: 1409
[2019-10-14 23:44:22,420 INFO  L600         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
[2019-10-14 23:44:22,422 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1409 states.
[2019-10-14 23:44:22,472 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1383.
[2019-10-14 23:44:22,473 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1383 states.
[2019-10-14 23:44:22,477 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1959 transitions.
[2019-10-14 23:44:22,478 INFO  L78                 Accepts]: Start accepts. Automaton has 1383 states and 1959 transitions. Word has length 147
[2019-10-14 23:44:22,478 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:22,478 INFO  L462      AbstractCegarLoop]: Abstraction has 1383 states and 1959 transitions.
[2019-10-14 23:44:22,479 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:22,479 INFO  L276                IsEmpty]: Start isEmpty. Operand 1383 states and 1959 transitions.
[2019-10-14 23:44:22,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-10-14 23:44:22,482 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:22,482 INFO  L380         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]
[2019-10-14 23:44:22,483 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:22,483 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:22,483 INFO  L82        PathProgramCache]: Analyzing trace with hash -1137007516, now seen corresponding path program 1 times
[2019-10-14 23:44:22,483 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:22,484 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237428356]
[2019-10-14 23:44:22,484 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:22,484 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:22,484 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:22,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:22,944 WARN  L191               SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:22,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:22,989 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:22,990 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237428356]
[2019-10-14 23:44:22,990 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:22,990 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-14 23:44:22,990 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619425818]
[2019-10-14 23:44:22,991 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 23:44:22,991 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:22,991 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 23:44:22,992 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:22,992 INFO  L87              Difference]: Start difference. First operand 1383 states and 1959 transitions. Second operand 5 states.
[2019-10-14 23:44:24,511 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:24,511 INFO  L93              Difference]: Finished difference Result 2275 states and 3231 transitions.
[2019-10-14 23:44:24,515 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:24,516 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 147
[2019-10-14 23:44:24,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:24,523 INFO  L225             Difference]: With dead ends: 2275
[2019-10-14 23:44:24,523 INFO  L226             Difference]: Without dead ends: 1061
[2019-10-14 23:44:24,526 INFO  L600         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
[2019-10-14 23:44:24,528 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1061 states.
[2019-10-14 23:44:24,567 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1061.
[2019-10-14 23:44:24,567 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1061 states.
[2019-10-14 23:44:24,571 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1494 transitions.
[2019-10-14 23:44:24,571 INFO  L78                 Accepts]: Start accepts. Automaton has 1061 states and 1494 transitions. Word has length 147
[2019-10-14 23:44:24,572 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:24,572 INFO  L462      AbstractCegarLoop]: Abstraction has 1061 states and 1494 transitions.
[2019-10-14 23:44:24,573 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 23:44:24,573 INFO  L276                IsEmpty]: Start isEmpty. Operand 1061 states and 1494 transitions.
[2019-10-14 23:44:24,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-10-14 23:44:24,576 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:24,576 INFO  L380         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]
[2019-10-14 23:44:24,577 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:24,577 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:24,577 INFO  L82        PathProgramCache]: Analyzing trace with hash 1811444338, now seen corresponding path program 1 times
[2019-10-14 23:44:24,578 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:24,578 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611848740]
[2019-10-14 23:44:24,578 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:24,579 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:24,579 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:24,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:24,899 WARN  L191               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:24,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:24,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:24,932 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611848740]
[2019-10-14 23:44:24,932 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:24,932 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:24,933 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542055498]
[2019-10-14 23:44:24,933 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:24,933 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:24,934 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:24,934 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:24,934 INFO  L87              Difference]: Start difference. First operand 1061 states and 1494 transitions. Second operand 4 states.
[2019-10-14 23:44:26,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:26,740 INFO  L93              Difference]: Finished difference Result 2751 states and 3920 transitions.
[2019-10-14 23:44:26,741 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-14 23:44:26,741 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 153
[2019-10-14 23:44:26,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:26,751 INFO  L225             Difference]: With dead ends: 2751
[2019-10-14 23:44:26,751 INFO  L226             Difference]: Without dead ends: 1942
[2019-10-14 23:44:26,754 INFO  L600         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
[2019-10-14 23:44:26,756 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1942 states.
[2019-10-14 23:44:26,819 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1916.
[2019-10-14 23:44:26,819 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1916 states.
[2019-10-14 23:44:26,825 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2713 transitions.
[2019-10-14 23:44:26,825 INFO  L78                 Accepts]: Start accepts. Automaton has 1916 states and 2713 transitions. Word has length 153
[2019-10-14 23:44:26,826 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:26,826 INFO  L462      AbstractCegarLoop]: Abstraction has 1916 states and 2713 transitions.
[2019-10-14 23:44:26,826 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:26,826 INFO  L276                IsEmpty]: Start isEmpty. Operand 1916 states and 2713 transitions.
[2019-10-14 23:44:26,830 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-10-14 23:44:26,830 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:26,830 INFO  L380         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]
[2019-10-14 23:44:26,831 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:26,831 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:26,831 INFO  L82        PathProgramCache]: Analyzing trace with hash 404324973, now seen corresponding path program 1 times
[2019-10-14 23:44:26,831 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:26,832 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486686932]
[2019-10-14 23:44:26,832 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:26,832 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:26,832 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:26,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:27,490 WARN  L191               SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:27,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:27,613 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:27,614 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486686932]
[2019-10-14 23:44:27,614 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:27,614 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2019-10-14 23:44:27,615 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294284056]
[2019-10-14 23:44:27,615 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 14 states
[2019-10-14 23:44:27,615 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:27,615 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2019-10-14 23:44:27,617 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2019-10-14 23:44:27,617 INFO  L87              Difference]: Start difference. First operand 1916 states and 2713 transitions. Second operand 14 states.
[2019-10-14 23:44:28,050 WARN  L191               SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 196
[2019-10-14 23:44:31,793 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:31,794 INFO  L93              Difference]: Finished difference Result 7242 states and 11196 transitions.
[2019-10-14 23:44:31,794 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-10-14 23:44:31,794 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 153
[2019-10-14 23:44:31,794 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:31,820 INFO  L225             Difference]: With dead ends: 7242
[2019-10-14 23:44:31,820 INFO  L226             Difference]: Without dead ends: 5602
[2019-10-14 23:44:31,826 INFO  L600         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
[2019-10-14 23:44:31,831 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5602 states.
[2019-10-14 23:44:32,047 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 3296.
[2019-10-14 23:44:32,047 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3296 states.
[2019-10-14 23:44:32,058 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4983 transitions.
[2019-10-14 23:44:32,059 INFO  L78                 Accepts]: Start accepts. Automaton has 3296 states and 4983 transitions. Word has length 153
[2019-10-14 23:44:32,061 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:32,061 INFO  L462      AbstractCegarLoop]: Abstraction has 3296 states and 4983 transitions.
[2019-10-14 23:44:32,061 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2019-10-14 23:44:32,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 3296 states and 4983 transitions.
[2019-10-14 23:44:32,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-10-14 23:44:32,067 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:32,067 INFO  L380         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]
[2019-10-14 23:44:32,068 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:32,068 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:32,068 INFO  L82        PathProgramCache]: Analyzing trace with hash -685965993, now seen corresponding path program 1 times
[2019-10-14 23:44:32,068 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:32,069 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326090890]
[2019-10-14 23:44:32,069 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:32,069 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:32,069 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:32,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:32,521 WARN  L191               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:32,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:32,567 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:32,568 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326090890]
[2019-10-14 23:44:32,568 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:32,568 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-10-14 23:44:32,568 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381103399]
[2019-10-14 23:44:32,569 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 23:44:32,569 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:32,570 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 23:44:32,570 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2019-10-14 23:44:32,570 INFO  L87              Difference]: Start difference. First operand 3296 states and 4983 transitions. Second operand 9 states.
[2019-10-14 23:44:32,818 WARN  L191               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2019-10-14 23:44:34,726 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:34,727 INFO  L93              Difference]: Finished difference Result 6873 states and 10638 transitions.
[2019-10-14 23:44:34,727 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-14 23:44:34,727 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 153
[2019-10-14 23:44:34,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:34,748 INFO  L225             Difference]: With dead ends: 6873
[2019-10-14 23:44:34,748 INFO  L226             Difference]: Without dead ends: 4901
[2019-10-14 23:44:34,754 INFO  L600         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
[2019-10-14 23:44:34,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4901 states.
[2019-10-14 23:44:34,953 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3984.
[2019-10-14 23:44:34,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3984 states.
[2019-10-14 23:44:34,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5886 transitions.
[2019-10-14 23:44:34,963 INFO  L78                 Accepts]: Start accepts. Automaton has 3984 states and 5886 transitions. Word has length 153
[2019-10-14 23:44:34,963 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:34,963 INFO  L462      AbstractCegarLoop]: Abstraction has 3984 states and 5886 transitions.
[2019-10-14 23:44:34,964 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 23:44:34,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 3984 states and 5886 transitions.
[2019-10-14 23:44:34,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-10-14 23:44:34,969 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:34,970 INFO  L380         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]
[2019-10-14 23:44:34,970 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:34,970 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:34,971 INFO  L82        PathProgramCache]: Analyzing trace with hash 1419709992, now seen corresponding path program 1 times
[2019-10-14 23:44:34,971 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:34,971 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809344168]
[2019-10-14 23:44:34,971 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:34,971 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:34,971 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:35,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:35,373 WARN  L191               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:35,380 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:35,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:35,464 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809344168]
[2019-10-14 23:44:35,465 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:35,465 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-14 23:44:35,465 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390651217]
[2019-10-14 23:44:35,466 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 23:44:35,466 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:35,466 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 23:44:35,466 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:35,466 INFO  L87              Difference]: Start difference. First operand 3984 states and 5886 transitions. Second operand 5 states.
[2019-10-14 23:44:38,243 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:38,243 INFO  L93              Difference]: Finished difference Result 10383 states and 15339 transitions.
[2019-10-14 23:44:38,244 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:38,244 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 153
[2019-10-14 23:44:38,244 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:38,263 INFO  L225             Difference]: With dead ends: 10383
[2019-10-14 23:44:38,264 INFO  L226             Difference]: Without dead ends: 6426
[2019-10-14 23:44:38,271 INFO  L600         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
[2019-10-14 23:44:38,277 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6426 states.
[2019-10-14 23:44:38,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6426 to 6404.
[2019-10-14 23:44:38,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6404 states.
[2019-10-14 23:44:38,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 9378 transitions.
[2019-10-14 23:44:38,579 INFO  L78                 Accepts]: Start accepts. Automaton has 6404 states and 9378 transitions. Word has length 153
[2019-10-14 23:44:38,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:38,579 INFO  L462      AbstractCegarLoop]: Abstraction has 6404 states and 9378 transitions.
[2019-10-14 23:44:38,579 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 23:44:38,579 INFO  L276                IsEmpty]: Start isEmpty. Operand 6404 states and 9378 transitions.
[2019-10-14 23:44:38,589 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2019-10-14 23:44:38,590 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:38,590 INFO  L380         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]
[2019-10-14 23:44:38,590 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:38,590 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:38,591 INFO  L82        PathProgramCache]: Analyzing trace with hash 1518674242, now seen corresponding path program 1 times
[2019-10-14 23:44:38,595 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:38,596 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828537198]
[2019-10-14 23:44:38,596 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:38,596 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:38,596 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:38,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:38,889 WARN  L191               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2019-10-14 23:44:38,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:38,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:38,932 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828537198]
[2019-10-14 23:44:38,932 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:38,933 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:38,933 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400738438]
[2019-10-14 23:44:38,933 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:38,933 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:38,934 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:38,934 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:38,934 INFO  L87              Difference]: Start difference. First operand 6404 states and 9378 transitions. Second operand 4 states.