/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 22:12:15,531 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 22:12:15,613 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 22:12:15,631 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 22:12:15,631 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 22:12:15,632 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 22:12:15,633 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 22:12:15,633 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 22:12:15,633 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 22:12:15,634 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 22:12:15,634 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 22:12:15,634 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 22:12:15,634 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 22:12:15,634 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 22:12:15,635 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 22:12:15,635 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 22:12:15,635 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 22:12:15,635 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 22:12:15,635 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 22:12:15,636 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 22:12:15,636 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 22:12:15,636 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 22:12:15,636 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 22:12:15,637 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 22:12:15,637 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:12:15,637 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 22:12:15,637 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 22:12:15,637 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 22:12:15,638 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 22:12:15,638 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 22:12:15,638 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 22:12:15,638 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 22:12:15,952 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 22:12:15,967 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 22:12:15,971 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 22:12:15,973 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 22:12:15,973 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 22:12:15,974 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-11-06 22:12:16,056 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb86ef066/69e98ea898b34176a90acac8234fb95e/FLAGd1a69059b
[2019-11-06 22:12:16,677 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 22:12:16,679 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-11-06 22:12:16,691 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb86ef066/69e98ea898b34176a90acac8234fb95e/FLAGd1a69059b
[2019-11-06 22:12:16,893 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb86ef066/69e98ea898b34176a90acac8234fb95e
[2019-11-06 22:12:16,901 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 22:12:16,903 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 22:12:16,904 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 22:12:16,904 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 22:12:16,908 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 22:12:16,909 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:16" (1/1) ...
[2019-11-06 22:12:16,912 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f0e6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:16, skipping insertion in model container
[2019-11-06 22:12:16,912 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:16" (1/1) ...
[2019-11-06 22:12:16,920 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 22:12:16,991 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 22:12:17,524 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:12:17,537 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 22:12:17,683 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:12:17,704 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 22:12:17,705 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17 WrapperNode
[2019-11-06 22:12:17,705 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 22:12:17,706 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 22:12:17,706 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 22:12:17,706 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 22:12:17,717 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (1/1) ...
[2019-11-06 22:12:17,717 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (1/1) ...
[2019-11-06 22:12:17,733 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (1/1) ...
[2019-11-06 22:12:17,733 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (1/1) ...
[2019-11-06 22:12:17,782 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (1/1) ...
[2019-11-06 22:12:17,812 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (1/1) ...
[2019-11-06 22:12:17,822 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (1/1) ...
[2019-11-06 22:12:17,840 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 22:12:17,842 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 22:12:17,843 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 22:12:17,843 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 22:12:17,844 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (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 22:12:17,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 22:12:17,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 22:12:17,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 22:12:17,935 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 22:12:17,935 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-11-06 22:12:17,936 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-11-06 22:12:17,936 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-11-06 22:12:17,936 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-11-06 22:12:17,936 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-11-06 22:12:17,937 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-11-06 22:12:17,937 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-11-06 22:12:17,937 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-11-06 22:12:17,938 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-11-06 22:12:17,938 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-11-06 22:12:17,939 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-11-06 22:12:17,939 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 22:12:17,942 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 22:12:17,942 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 22:12:19,446 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 22:12:19,446 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-06 22:12:19,450 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:19 BoogieIcfgContainer
[2019-11-06 22:12:19,450 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 22:12:19,451 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 22:12:19,451 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 22:12:19,454 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 22:12:19,455 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:16" (1/3) ...
[2019-11-06 22:12:19,456 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d84f88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:19, skipping insertion in model container
[2019-11-06 22:12:19,456 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:17" (2/3) ...
[2019-11-06 22:12:19,456 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d84f88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:19, skipping insertion in model container
[2019-11-06 22:12:19,456 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:19" (3/3) ...
[2019-11-06 22:12:19,458 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-11-06 22:12:19,469 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 22:12:19,478 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 22:12:19,490 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 22:12:19,520 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 22:12:19,520 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 22:12:19,520 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 22:12:19,520 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 22:12:19,521 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 22:12:19,521 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 22:12:19,521 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 22:12:19,521 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 22:12:19,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 304 states.
[2019-11-06 22:12:19,565 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-11-06 22:12:19,565 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:19,567 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]
[2019-11-06 22:12:19,569 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:19,575 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:19,575 INFO  L82        PathProgramCache]: Analyzing trace with hash -1527007645, now seen corresponding path program 1 times
[2019-11-06 22:12:19,582 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:19,582 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211814377]
[2019-11-06 22:12:19,583 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:19,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:20,482 WARN  L191               SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:20,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:20,553 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 22:12:20,554 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211814377]
[2019-11-06 22:12:20,555 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:20,555 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:12:20,557 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513425578]
[2019-11-06 22:12:20,562 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:12:20,563 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:20,577 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:12:20,578 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:12:20,580 INFO  L87              Difference]: Start difference. First operand 304 states. Second operand 4 states.
[2019-11-06 22:12:20,910 WARN  L191               SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 173
[2019-11-06 22:12:22,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:22,704 INFO  L93              Difference]: Finished difference Result 613 states and 1073 transitions.
[2019-11-06 22:12:22,705 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:12:22,706 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2019-11-06 22:12:22,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:22,731 INFO  L225             Difference]: With dead ends: 613
[2019-11-06 22:12:22,733 INFO  L226             Difference]: Without dead ends: 493
[2019-11-06 22:12:22,742 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:22,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 493 states.
[2019-11-06 22:12:22,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491.
[2019-11-06 22:12:22,885 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 491 states.
[2019-11-06 22:12:22,888 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 734 transitions.
[2019-11-06 22:12:22,891 INFO  L78                 Accepts]: Start accepts. Automaton has 491 states and 734 transitions. Word has length 142
[2019-11-06 22:12:22,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:22,895 INFO  L462      AbstractCegarLoop]: Abstraction has 491 states and 734 transitions.
[2019-11-06 22:12:22,895 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:12:22,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 491 states and 734 transitions.
[2019-11-06 22:12:22,904 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-11-06 22:12:22,904 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:22,904 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]
[2019-11-06 22:12:22,905 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:22,905 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:22,905 INFO  L82        PathProgramCache]: Analyzing trace with hash 1999332176, now seen corresponding path program 1 times
[2019-11-06 22:12:22,905 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:22,905 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793792488]
[2019-11-06 22:12:22,906 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:23,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:23,349 WARN  L191               SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:23,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:23,424 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 22:12:23,425 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793792488]
[2019-11-06 22:12:23,426 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:23,426 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:12:23,426 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455178000]
[2019-11-06 22:12:23,429 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:12:23,430 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:23,430 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:12:23,431 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:12:23,431 INFO  L87              Difference]: Start difference. First operand 491 states and 734 transitions. Second operand 4 states.
[2019-11-06 22:12:23,672 WARN  L191               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 173
[2019-11-06 22:12:24,984 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:24,985 INFO  L93              Difference]: Finished difference Result 1061 states and 1631 transitions.
[2019-11-06 22:12:24,985 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:12:24,986 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2019-11-06 22:12:24,987 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:24,994 INFO  L225             Difference]: With dead ends: 1061
[2019-11-06 22:12:24,994 INFO  L226             Difference]: Without dead ends: 863
[2019-11-06 22:12:24,997 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:24,999 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 863 states.
[2019-11-06 22:12:25,044 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861.
[2019-11-06 22:12:25,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 861 states.
[2019-11-06 22:12:25,049 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1298 transitions.
[2019-11-06 22:12:25,049 INFO  L78                 Accepts]: Start accepts. Automaton has 861 states and 1298 transitions. Word has length 142
[2019-11-06 22:12:25,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:25,050 INFO  L462      AbstractCegarLoop]: Abstraction has 861 states and 1298 transitions.
[2019-11-06 22:12:25,050 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:12:25,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 861 states and 1298 transitions.
[2019-11-06 22:12:25,054 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-11-06 22:12:25,054 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:25,054 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]
[2019-11-06 22:12:25,054 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:25,055 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:25,055 INFO  L82        PathProgramCache]: Analyzing trace with hash -686393694, now seen corresponding path program 1 times
[2019-11-06 22:12:25,055 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:25,055 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911978003]
[2019-11-06 22:12:25,056 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:25,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:25,633 WARN  L191               SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:25,638 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:25,706 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 22:12:25,706 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911978003]
[2019-11-06 22:12:25,707 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:25,707 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:12:25,707 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988135296]
[2019-11-06 22:12:25,708 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:12:25,708 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:25,708 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:12:25,709 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:25,709 INFO  L87              Difference]: Start difference. First operand 861 states and 1298 transitions. Second operand 5 states.
[2019-11-06 22:12:28,094 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:28,095 INFO  L93              Difference]: Finished difference Result 2510 states and 3779 transitions.
[2019-11-06 22:12:28,095 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:12:28,095 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 142
[2019-11-06 22:12:28,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:28,105 INFO  L225             Difference]: With dead ends: 2510
[2019-11-06 22:12:28,106 INFO  L226             Difference]: Without dead ends: 1662
[2019-11-06 22:12:28,111 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:12:28,114 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1662 states.
[2019-11-06 22:12:28,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1660.
[2019-11-06 22:12:28,186 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1660 states.
[2019-11-06 22:12:28,193 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2478 transitions.
[2019-11-06 22:12:28,194 INFO  L78                 Accepts]: Start accepts. Automaton has 1660 states and 2478 transitions. Word has length 142
[2019-11-06 22:12:28,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:28,195 INFO  L462      AbstractCegarLoop]: Abstraction has 1660 states and 2478 transitions.
[2019-11-06 22:12:28,195 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:12:28,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 1660 states and 2478 transitions.
[2019-11-06 22:12:28,200 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2019-11-06 22:12:28,200 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:28,200 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]
[2019-11-06 22:12:28,201 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:28,201 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:28,201 INFO  L82        PathProgramCache]: Analyzing trace with hash -755552508, now seen corresponding path program 1 times
[2019-11-06 22:12:28,201 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:28,202 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060527108]
[2019-11-06 22:12:28,202 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:28,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:28,616 WARN  L191               SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:28,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:28,652 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 22:12:28,652 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060527108]
[2019-11-06 22:12:28,653 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:28,653 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:12:28,654 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993776537]
[2019-11-06 22:12:28,655 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:12:28,655 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:28,656 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:12:28,656 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:12:28,656 INFO  L87              Difference]: Start difference. First operand 1660 states and 2478 transitions. Second operand 4 states.
[2019-11-06 22:12:31,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:31,393 INFO  L93              Difference]: Finished difference Result 4934 states and 7364 transitions.
[2019-11-06 22:12:31,393 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:12:31,393 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 143
[2019-11-06 22:12:31,394 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:31,410 INFO  L225             Difference]: With dead ends: 4934
[2019-11-06 22:12:31,410 INFO  L226             Difference]: Without dead ends: 3306
[2019-11-06 22:12:31,415 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:12:31,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3306 states.
[2019-11-06 22:12:31,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 1662.
[2019-11-06 22:12:31,512 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1662 states.
[2019-11-06 22:12:31,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2480 transitions.
[2019-11-06 22:12:31,521 INFO  L78                 Accepts]: Start accepts. Automaton has 1662 states and 2480 transitions. Word has length 143
[2019-11-06 22:12:31,521 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:31,521 INFO  L462      AbstractCegarLoop]: Abstraction has 1662 states and 2480 transitions.
[2019-11-06 22:12:31,521 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:12:31,522 INFO  L276                IsEmpty]: Start isEmpty. Operand 1662 states and 2480 transitions.
[2019-11-06 22:12:31,525 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-11-06 22:12:31,525 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:31,525 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]
[2019-11-06 22:12:31,526 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:31,526 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:31,526 INFO  L82        PathProgramCache]: Analyzing trace with hash -1401891903, now seen corresponding path program 1 times
[2019-11-06 22:12:31,527 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:31,528 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053293195]
[2019-11-06 22:12:31,529 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:31,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:31,884 WARN  L191               SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:31,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:31,993 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 22:12:31,994 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053293195]
[2019-11-06 22:12:31,994 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:31,994 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:12:31,995 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240836621]
[2019-11-06 22:12:31,996 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:12:31,996 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:31,997 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:12:31,997 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:12:31,997 INFO  L87              Difference]: Start difference. First operand 1662 states and 2480 transitions. Second operand 4 states.
[2019-11-06 22:12:34,131 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:34,132 INFO  L93              Difference]: Finished difference Result 4382 states and 6541 transitions.
[2019-11-06 22:12:34,132 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:12:34,132 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 144
[2019-11-06 22:12:34,133 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:34,148 INFO  L225             Difference]: With dead ends: 4382
[2019-11-06 22:12:34,148 INFO  L226             Difference]: Without dead ends: 2890
[2019-11-06 22:12:34,151 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 22:12:34,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2890 states.
[2019-11-06 22:12:34,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888.
[2019-11-06 22:12:34,266 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2888 states.
[2019-11-06 22:12:34,274 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4253 transitions.
[2019-11-06 22:12:34,274 INFO  L78                 Accepts]: Start accepts. Automaton has 2888 states and 4253 transitions. Word has length 144
[2019-11-06 22:12:34,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:34,275 INFO  L462      AbstractCegarLoop]: Abstraction has 2888 states and 4253 transitions.
[2019-11-06 22:12:34,275 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:12:34,275 INFO  L276                IsEmpty]: Start isEmpty. Operand 2888 states and 4253 transitions.
[2019-11-06 22:12:34,280 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-11-06 22:12:34,281 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:34,281 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]
[2019-11-06 22:12:34,281 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:34,282 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:34,282 INFO  L82        PathProgramCache]: Analyzing trace with hash 1372424798, now seen corresponding path program 1 times
[2019-11-06 22:12:34,282 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:34,282 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513015054]
[2019-11-06 22:12:34,283 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:34,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:34,689 WARN  L191               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:34,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:34,721 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 22:12:34,722 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513015054]
[2019-11-06 22:12:34,723 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:34,723 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:12:34,724 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659610479]
[2019-11-06 22:12:34,724 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:12:34,724 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:34,725 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:12:34,725 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:34,725 INFO  L87              Difference]: Start difference. First operand 2888 states and 4253 transitions. Second operand 5 states.
[2019-11-06 22:12:36,338 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:36,338 INFO  L93              Difference]: Finished difference Result 5958 states and 8716 transitions.
[2019-11-06 22:12:36,345 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:12:36,345 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 144
[2019-11-06 22:12:36,345 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:36,360 INFO  L225             Difference]: With dead ends: 5958
[2019-11-06 22:12:36,362 INFO  L226             Difference]: Without dead ends: 3026
[2019-11-06 22:12:36,369 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:36,372 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3026 states.
[2019-11-06 22:12:36,497 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 3024.
[2019-11-06 22:12:36,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3024 states.
[2019-11-06 22:12:36,518 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4395 transitions.
[2019-11-06 22:12:36,518 INFO  L78                 Accepts]: Start accepts. Automaton has 3024 states and 4395 transitions. Word has length 144
[2019-11-06 22:12:36,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:36,519 INFO  L462      AbstractCegarLoop]: Abstraction has 3024 states and 4395 transitions.
[2019-11-06 22:12:36,519 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:12:36,519 INFO  L276                IsEmpty]: Start isEmpty. Operand 3024 states and 4395 transitions.
[2019-11-06 22:12:36,526 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-11-06 22:12:36,526 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:36,526 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]
[2019-11-06 22:12:36,527 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:36,527 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:36,528 INFO  L82        PathProgramCache]: Analyzing trace with hash 2066844131, now seen corresponding path program 1 times
[2019-11-06 22:12:36,528 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:36,528 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925482111]
[2019-11-06 22:12:36,528 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:36,628 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:36,918 WARN  L191               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:36,923 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:36,954 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 22:12:36,954 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925482111]
[2019-11-06 22:12:36,955 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:36,955 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:12:36,955 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736048351]
[2019-11-06 22:12:36,955 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:12:36,956 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:36,956 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:12:36,956 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:36,956 INFO  L87              Difference]: Start difference. First operand 3024 states and 4395 transitions. Second operand 5 states.
[2019-11-06 22:12:39,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:39,101 INFO  L93              Difference]: Finished difference Result 8770 states and 12691 transitions.
[2019-11-06 22:12:39,101 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:12:39,102 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 144
[2019-11-06 22:12:39,102 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:39,124 INFO  L225             Difference]: With dead ends: 8770
[2019-11-06 22:12:39,125 INFO  L226             Difference]: Without dead ends: 5818
[2019-11-06 22:12:39,131 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:12:39,137 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5818 states.
[2019-11-06 22:12:39,359 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5816.
[2019-11-06 22:12:39,359 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5816 states.
[2019-11-06 22:12:39,370 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 8339 transitions.
[2019-11-06 22:12:39,370 INFO  L78                 Accepts]: Start accepts. Automaton has 5816 states and 8339 transitions. Word has length 144
[2019-11-06 22:12:39,371 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:39,371 INFO  L462      AbstractCegarLoop]: Abstraction has 5816 states and 8339 transitions.
[2019-11-06 22:12:39,371 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:12:39,371 INFO  L276                IsEmpty]: Start isEmpty. Operand 5816 states and 8339 transitions.
[2019-11-06 22:12:39,380 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-11-06 22:12:39,380 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:39,380 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:12:39,381 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:39,381 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:39,381 INFO  L82        PathProgramCache]: Analyzing trace with hash 1792011813, now seen corresponding path program 1 times
[2019-11-06 22:12:39,381 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:39,382 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889384847]
[2019-11-06 22:12:39,382 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:39,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:39,656 WARN  L191               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:39,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:39,703 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 22:12:39,704 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889384847]
[2019-11-06 22:12:39,705 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:39,705 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:12:39,706 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878774986]
[2019-11-06 22:12:39,707 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:12:39,707 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:39,708 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:12:39,709 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:12:39,709 INFO  L87              Difference]: Start difference. First operand 5816 states and 8339 transitions. Second operand 4 states.
[2019-11-06 22:12:41,306 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:41,306 INFO  L93              Difference]: Finished difference Result 17254 states and 24713 transitions.
[2019-11-06 22:12:41,306 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:12:41,307 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 145
[2019-11-06 22:12:41,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:41,351 INFO  L225             Difference]: With dead ends: 17254
[2019-11-06 22:12:41,352 INFO  L226             Difference]: Without dead ends: 11554
[2019-11-06 22:12:41,364 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 22:12:41,375 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11554 states.
[2019-11-06 22:12:41,710 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 5828.
[2019-11-06 22:12:41,710 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5828 states.
[2019-11-06 22:12:41,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8351 transitions.
[2019-11-06 22:12:41,719 INFO  L78                 Accepts]: Start accepts. Automaton has 5828 states and 8351 transitions. Word has length 145
[2019-11-06 22:12:41,719 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:41,719 INFO  L462      AbstractCegarLoop]: Abstraction has 5828 states and 8351 transitions.
[2019-11-06 22:12:41,719 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:12:41,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 5828 states and 8351 transitions.
[2019-11-06 22:12:41,728 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-11-06 22:12:41,728 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:41,728 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:12:41,729 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:41,729 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:41,729 INFO  L82        PathProgramCache]: Analyzing trace with hash 1919082916, now seen corresponding path program 1 times
[2019-11-06 22:12:41,729 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:41,730 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582963678]
[2019-11-06 22:12:41,730 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:41,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:42,065 WARN  L191               SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:42,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:42,103 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 22:12:42,104 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582963678]
[2019-11-06 22:12:42,104 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:42,104 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:12:42,105 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915859168]
[2019-11-06 22:12:42,105 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:12:42,105 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:42,105 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:12:42,106 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:42,106 INFO  L87              Difference]: Start difference. First operand 5828 states and 8351 transitions. Second operand 5 states.
[2019-11-06 22:12:44,292 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:44,292 INFO  L93              Difference]: Finished difference Result 15812 states and 22544 transitions.
[2019-11-06 22:12:44,293 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:12:44,293 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 146
[2019-11-06 22:12:44,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:44,312 INFO  L225             Difference]: With dead ends: 15812
[2019-11-06 22:12:44,313 INFO  L226             Difference]: Without dead ends: 10110
[2019-11-06 22:12:44,323 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 22:12:44,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10110 states.
[2019-11-06 22:12:44,819 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 10108.
[2019-11-06 22:12:44,819 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10108 states.
[2019-11-06 22:12:44,828 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14232 transitions.
[2019-11-06 22:12:44,829 INFO  L78                 Accepts]: Start accepts. Automaton has 10108 states and 14232 transitions. Word has length 146
[2019-11-06 22:12:44,829 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:44,829 INFO  L462      AbstractCegarLoop]: Abstraction has 10108 states and 14232 transitions.
[2019-11-06 22:12:44,829 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:12:44,829 INFO  L276                IsEmpty]: Start isEmpty. Operand 10108 states and 14232 transitions.
[2019-11-06 22:12:44,844 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2019-11-06 22:12:44,844 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:44,845 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]
[2019-11-06 22:12:44,845 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:44,845 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:44,845 INFO  L82        PathProgramCache]: Analyzing trace with hash -754251552, now seen corresponding path program 1 times
[2019-11-06 22:12:44,846 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:44,846 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486610374]
[2019-11-06 22:12:44,846 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:44,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:45,168 WARN  L191               SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:45,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:45,206 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 22:12:45,207 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486610374]
[2019-11-06 22:12:45,207 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:45,207 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:12:45,209 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881253280]
[2019-11-06 22:12:45,210 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:12:45,210 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:45,210 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:12:45,210 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:45,211 INFO  L87              Difference]: Start difference. First operand 10108 states and 14232 transitions. Second operand 5 states.
[2019-11-06 22:12:47,776 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:12:47,776 INFO  L93              Difference]: Finished difference Result 28566 states and 40288 transitions.
[2019-11-06 22:12:47,777 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:12:47,777 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 148
[2019-11-06 22:12:47,777 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:12:47,811 INFO  L225             Difference]: With dead ends: 28566
[2019-11-06 22:12:47,811 INFO  L226             Difference]: Without dead ends: 18774
[2019-11-06 22:12:47,829 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:12:47,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18774 states.
[2019-11-06 22:12:48,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18774 to 18772.
[2019-11-06 22:12:48,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18772 states.
[2019-11-06 22:12:48,673 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18772 states to 18772 states and 26177 transitions.
[2019-11-06 22:12:48,673 INFO  L78                 Accepts]: Start accepts. Automaton has 18772 states and 26177 transitions. Word has length 148
[2019-11-06 22:12:48,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:12:48,673 INFO  L462      AbstractCegarLoop]: Abstraction has 18772 states and 26177 transitions.
[2019-11-06 22:12:48,673 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:12:48,673 INFO  L276                IsEmpty]: Start isEmpty. Operand 18772 states and 26177 transitions.
[2019-11-06 22:12:48,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2019-11-06 22:12:48,693 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:12:48,693 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]
[2019-11-06 22:12:48,693 INFO  L410      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:12:48,693 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:12:48,694 INFO  L82        PathProgramCache]: Analyzing trace with hash -1799575128, now seen corresponding path program 1 times
[2019-11-06 22:12:48,694 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:12:48,694 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915014380]
[2019-11-06 22:12:48,694 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:12:48,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:49,609 WARN  L191               SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:12:49,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:12:49,647 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 22:12:49,647 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915014380]
[2019-11-06 22:12:49,647 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:12:49,648 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:12:49,648 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577017816]
[2019-11-06 22:12:49,648 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:12:49,648 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:12:49,649 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:12:49,649 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:12:49,649 INFO  L87              Difference]: Start difference. First operand 18772 states and 26177 transitions. Second operand 5 states.