/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.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 22:13:12,805 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 22:13:12,890 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-06 22:13:12,923 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 22:13:12,924 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 22:13:12,925 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 22:13:12,925 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 22:13:12,925 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 22:13:12,926 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 22:13:12,929 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 22:13:12,930 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 22:13:12,930 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 22:13:12,930 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 22:13:12,930 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 22:13:12,930 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 22:13:12,931 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 22:13:12,932 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 22:13:12,932 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 22:13:12,932 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 22:13:12,932 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 22:13:12,932 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 22:13:12,933 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 22:13:12,933 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 22:13:12,933 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 22:13:12,933 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:13:12,934 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 22:13:12,934 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 22:13:12,934 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 22:13:12,934 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 22:13:12,934 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 22:13:12,935 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 22:13:12,935 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 22:13:13,207 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 22:13:13,220 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 22:13:13,224 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 22:13:13,226 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 22:13:13,226 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 22:13:13,227 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-11-06 22:13:13,303 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563400314/383ec80d64524db2814f792b9f71060d/FLAGc73fb2142
[2019-11-06 22:13:13,892 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 22:13:13,893 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-11-06 22:13:13,907 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563400314/383ec80d64524db2814f792b9f71060d/FLAGc73fb2142
[2019-11-06 22:13:14,145 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563400314/383ec80d64524db2814f792b9f71060d
[2019-11-06 22:13:14,155 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 22:13:14,157 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 22:13:14,158 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 22:13:14,158 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 22:13:14,163 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 22:13:14,164 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:14,166 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fec4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14, skipping insertion in model container
[2019-11-06 22:13:14,167 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:14,176 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 22:13:14,247 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 22:13:14,782 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:13:14,796 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 22:13:14,962 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:13:14,985 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 22:13:14,985 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14 WrapperNode
[2019-11-06 22:13:14,985 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 22:13:14,986 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 22:13:14,986 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 22:13:14,986 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 22:13:14,998 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:14,999 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:15,015 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:15,015 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:15,047 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:15,076 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:15,092 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
[2019-11-06 22:13:15,104 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 22:13:15,105 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 22:13:15,105 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 22:13:15,105 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 22:13:15,106 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:13:15,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 22:13:15,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 22:13:15,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 22:13:15,185 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 22:13:15,186 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-11-06 22:13:15,186 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-11-06 22:13:15,187 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-11-06 22:13:15,187 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-11-06 22:13:15,187 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-11-06 22:13:15,187 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-11-06 22:13:15,187 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-11-06 22:13:15,188 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-11-06 22:13:15,188 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-11-06 22:13:15,189 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-11-06 22:13:15,189 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-11-06 22:13:15,190 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 22:13:15,192 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 22:13:15,192 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 22:13:16,751 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 22:13:16,751 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-06 22:13:16,753 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:16 BoogieIcfgContainer
[2019-11-06 22:13:16,753 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 22:13:16,754 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 22:13:16,755 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 22:13:16,758 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 22:13:16,758 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:14" (1/3) ...
[2019-11-06 22:13:16,759 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29747075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:16, skipping insertion in model container
[2019-11-06 22:13:16,759 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:14" (2/3) ...
[2019-11-06 22:13:16,760 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29747075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:16, skipping insertion in model container
[2019-11-06 22:13:16,760 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:16" (3/3) ...
[2019-11-06 22:13:16,766 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-11-06 22:13:16,776 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 22:13:16,786 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 22:13:16,798 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 22:13:16,827 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 22:13:16,827 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 22:13:16,828 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 22:13:16,828 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 22:13:16,828 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 22:13:16,828 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 22:13:16,828 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 22:13:16,828 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 22:13:16,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 299 states.
[2019-11-06 22:13:16,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-11-06 22:13:16,870 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:16,871 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:16,873 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:16,878 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:16,879 INFO  L82        PathProgramCache]: Analyzing trace with hash -1545579630, now seen corresponding path program 1 times
[2019-11-06 22:13:16,889 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:16,889 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577557843]
[2019-11-06 22:13:16,889 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:17,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:17,825 WARN  L191               SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:17,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:17,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:17,894 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577557843]
[2019-11-06 22:13:17,895 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:17,895 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:17,897 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499930495]
[2019-11-06 22:13:17,902 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:17,903 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:17,919 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:17,920 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:17,923 INFO  L87              Difference]: Start difference. First operand 299 states. Second operand 4 states.
[2019-11-06 22:13:18,256 WARN  L191               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 173
[2019-11-06 22:13:19,861 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:19,861 INFO  L93              Difference]: Finished difference Result 569 states and 997 transitions.
[2019-11-06 22:13:19,862 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:19,864 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 145
[2019-11-06 22:13:19,865 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:19,883 INFO  L225             Difference]: With dead ends: 569
[2019-11-06 22:13:19,884 INFO  L226             Difference]: Without dead ends: 465
[2019-11-06 22:13:19,888 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:19,910 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 465 states.
[2019-11-06 22:13:19,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 463.
[2019-11-06 22:13:19,970 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 463 states.
[2019-11-06 22:13:19,973 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 686 transitions.
[2019-11-06 22:13:19,975 INFO  L78                 Accepts]: Start accepts. Automaton has 463 states and 686 transitions. Word has length 145
[2019-11-06 22:13:19,976 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:19,976 INFO  L462      AbstractCegarLoop]: Abstraction has 463 states and 686 transitions.
[2019-11-06 22:13:19,976 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:19,976 INFO  L276                IsEmpty]: Start isEmpty. Operand 463 states and 686 transitions.
[2019-11-06 22:13:19,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-11-06 22:13:19,981 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:19,981 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:19,982 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:19,982 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:19,982 INFO  L82        PathProgramCache]: Analyzing trace with hash 1852792009, now seen corresponding path program 1 times
[2019-11-06 22:13:19,982 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:19,983 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072425359]
[2019-11-06 22:13:19,983 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:20,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:20,591 WARN  L191               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:20,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:20,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:20,672 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072425359]
[2019-11-06 22:13:20,672 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:20,673 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:20,673 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623404846]
[2019-11-06 22:13:20,675 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:20,675 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:20,676 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:20,676 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:20,676 INFO  L87              Difference]: Start difference. First operand 463 states and 686 transitions. Second operand 5 states.
[2019-11-06 22:13:22,814 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:22,815 INFO  L93              Difference]: Finished difference Result 1349 states and 1997 transitions.
[2019-11-06 22:13:22,815 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:22,815 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 145
[2019-11-06 22:13:22,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:22,821 INFO  L225             Difference]: With dead ends: 1349
[2019-11-06 22:13:22,821 INFO  L226             Difference]: Without dead ends: 899
[2019-11-06 22:13:22,825 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:22,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 899 states.
[2019-11-06 22:13:22,882 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897.
[2019-11-06 22:13:22,882 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 897 states.
[2019-11-06 22:13:22,886 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1319 transitions.
[2019-11-06 22:13:22,887 INFO  L78                 Accepts]: Start accepts. Automaton has 897 states and 1319 transitions. Word has length 145
[2019-11-06 22:13:22,887 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:22,887 INFO  L462      AbstractCegarLoop]: Abstraction has 897 states and 1319 transitions.
[2019-11-06 22:13:22,887 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:22,887 INFO  L276                IsEmpty]: Start isEmpty. Operand 897 states and 1319 transitions.
[2019-11-06 22:13:22,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-11-06 22:13:22,892 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:22,892 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:22,892 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:22,893 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:22,893 INFO  L82        PathProgramCache]: Analyzing trace with hash 1132437897, now seen corresponding path program 1 times
[2019-11-06 22:13:22,893 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:22,893 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533480106]
[2019-11-06 22:13:22,894 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:22,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:23,226 WARN  L191               SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:23,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:23,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:23,342 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533480106]
[2019-11-06 22:13:23,342 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:23,342 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:23,343 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990472484]
[2019-11-06 22:13:23,344 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:23,344 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:23,344 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:23,345 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:23,345 INFO  L87              Difference]: Start difference. First operand 897 states and 1319 transitions. Second operand 4 states.
[2019-11-06 22:13:25,680 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:25,681 INFO  L93              Difference]: Finished difference Result 2645 states and 3887 transitions.
[2019-11-06 22:13:25,683 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:25,683 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 146
[2019-11-06 22:13:25,684 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:25,693 INFO  L225             Difference]: With dead ends: 2645
[2019-11-06 22:13:25,693 INFO  L226             Difference]: Without dead ends: 1780
[2019-11-06 22:13:25,696 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:25,698 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1780 states.
[2019-11-06 22:13:25,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 899.
[2019-11-06 22:13:25,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 899 states.
[2019-11-06 22:13:25,746 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1321 transitions.
[2019-11-06 22:13:25,747 INFO  L78                 Accepts]: Start accepts. Automaton has 899 states and 1321 transitions. Word has length 146
[2019-11-06 22:13:25,747 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:25,747 INFO  L462      AbstractCegarLoop]: Abstraction has 899 states and 1321 transitions.
[2019-11-06 22:13:25,747 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:25,748 INFO  L276                IsEmpty]: Start isEmpty. Operand 899 states and 1321 transitions.
[2019-11-06 22:13:25,750 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-11-06 22:13:25,751 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:25,751 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:25,751 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:25,752 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:25,752 INFO  L82        PathProgramCache]: Analyzing trace with hash 18878169, now seen corresponding path program 1 times
[2019-11-06 22:13:25,752 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:25,752 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799255458]
[2019-11-06 22:13:25,752 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:25,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:26,112 WARN  L191               SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:26,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:26,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:26,229 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799255458]
[2019-11-06 22:13:26,229 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:26,230 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:26,230 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289958836]
[2019-11-06 22:13:26,231 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:26,231 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:26,232 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:26,232 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:26,232 INFO  L87              Difference]: Start difference. First operand 899 states and 1321 transitions. Second operand 4 states.
[2019-11-06 22:13:28,242 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:28,242 INFO  L93              Difference]: Finished difference Result 2451 states and 3620 transitions.
[2019-11-06 22:13:28,243 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:28,243 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 147
[2019-11-06 22:13:28,244 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:28,256 INFO  L225             Difference]: With dead ends: 2451
[2019-11-06 22:13:28,256 INFO  L226             Difference]: Without dead ends: 1734
[2019-11-06 22:13:28,258 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:28,260 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1734 states.
[2019-11-06 22:13:28,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732.
[2019-11-06 22:13:28,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1732 states.
[2019-11-06 22:13:28,333 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2523 transitions.
[2019-11-06 22:13:28,334 INFO  L78                 Accepts]: Start accepts. Automaton has 1732 states and 2523 transitions. Word has length 147
[2019-11-06 22:13:28,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:28,334 INFO  L462      AbstractCegarLoop]: Abstraction has 1732 states and 2523 transitions.
[2019-11-06 22:13:28,334 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:28,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 1732 states and 2523 transitions.
[2019-11-06 22:13:28,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-11-06 22:13:28,338 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:28,338 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:28,339 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:28,339 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:28,339 INFO  L82        PathProgramCache]: Analyzing trace with hash 1632040732, now seen corresponding path program 1 times
[2019-11-06 22:13:28,340 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:28,340 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699426351]
[2019-11-06 22:13:28,340 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:28,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:28,759 WARN  L191               SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:28,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:28,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:28,798 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699426351]
[2019-11-06 22:13:28,798 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:28,798 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:28,799 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693776276]
[2019-11-06 22:13:28,799 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:28,800 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:28,800 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:28,800 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:28,801 INFO  L87              Difference]: Start difference. First operand 1732 states and 2523 transitions. Second operand 5 states.
[2019-11-06 22:13:30,094 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:30,094 INFO  L93              Difference]: Finished difference Result 2881 states and 4212 transitions.
[2019-11-06 22:13:30,095 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:30,095 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 147
[2019-11-06 22:13:30,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:30,105 INFO  L225             Difference]: With dead ends: 2881
[2019-11-06 22:13:30,105 INFO  L226             Difference]: Without dead ends: 1321
[2019-11-06 22:13:30,110 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:30,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1321 states.
[2019-11-06 22:13:30,195 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1321.
[2019-11-06 22:13:30,195 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1321 states.
[2019-11-06 22:13:30,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1916 transitions.
[2019-11-06 22:13:30,202 INFO  L78                 Accepts]: Start accepts. Automaton has 1321 states and 1916 transitions. Word has length 147
[2019-11-06 22:13:30,203 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:30,203 INFO  L462      AbstractCegarLoop]: Abstraction has 1321 states and 1916 transitions.
[2019-11-06 22:13:30,203 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:30,204 INFO  L276                IsEmpty]: Start isEmpty. Operand 1321 states and 1916 transitions.
[2019-11-06 22:13:30,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-11-06 22:13:30,209 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:30,210 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:30,210 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:30,210 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:30,211 INFO  L82        PathProgramCache]: Analyzing trace with hash 1705432715, now seen corresponding path program 1 times
[2019-11-06 22:13:30,211 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:30,212 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259567438]
[2019-11-06 22:13:30,212 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:30,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:30,797 WARN  L191               SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:30,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:30,898 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:30,900 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259567438]
[2019-11-06 22:13:30,901 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:30,901 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 22:13:30,902 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587645487]
[2019-11-06 22:13:30,902 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 22:13:30,903 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:30,903 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 22:13:30,903 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2019-11-06 22:13:30,904 INFO  L87              Difference]: Start difference. First operand 1321 states and 1916 transitions. Second operand 9 states.
[2019-11-06 22:13:31,311 WARN  L191               SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 178
[2019-11-06 22:13:33,665 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:33,665 INFO  L93              Difference]: Finished difference Result 3867 states and 5900 transitions.
[2019-11-06 22:13:33,666 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-11-06 22:13:33,666 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 150
[2019-11-06 22:13:33,668 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:33,686 INFO  L225             Difference]: With dead ends: 3867
[2019-11-06 22:13:33,690 INFO  L226             Difference]: Without dead ends: 2751
[2019-11-06 22:13:33,696 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342
[2019-11-06 22:13:33,702 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2751 states.
[2019-11-06 22:13:33,879 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 1652.
[2019-11-06 22:13:33,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1652 states.
[2019-11-06 22:13:33,900 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2413 transitions.
[2019-11-06 22:13:33,900 INFO  L78                 Accepts]: Start accepts. Automaton has 1652 states and 2413 transitions. Word has length 150
[2019-11-06 22:13:33,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:33,901 INFO  L462      AbstractCegarLoop]: Abstraction has 1652 states and 2413 transitions.
[2019-11-06 22:13:33,901 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 22:13:33,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 1652 states and 2413 transitions.
[2019-11-06 22:13:33,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-11-06 22:13:33,907 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:33,907 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:33,908 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:33,908 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:33,908 INFO  L82        PathProgramCache]: Analyzing trace with hash -912214424, now seen corresponding path program 1 times
[2019-11-06 22:13:33,909 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:33,909 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229136057]
[2019-11-06 22:13:33,909 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:34,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:34,420 WARN  L191               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:34,425 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:34,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:34,460 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229136057]
[2019-11-06 22:13:34,461 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:34,461 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:34,461 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043197269]
[2019-11-06 22:13:34,461 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:34,462 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:34,463 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:34,463 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:34,463 INFO  L87              Difference]: Start difference. First operand 1652 states and 2413 transitions. Second operand 5 states.
[2019-11-06 22:13:36,395 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:36,395 INFO  L93              Difference]: Finished difference Result 4332 states and 6340 transitions.
[2019-11-06 22:13:36,395 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:36,395 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 150
[2019-11-06 22:13:36,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:36,407 INFO  L225             Difference]: With dead ends: 4332
[2019-11-06 22:13:36,407 INFO  L226             Difference]: Without dead ends: 2703
[2019-11-06 22:13:36,410 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:36,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2703 states.
[2019-11-06 22:13:36,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2701.
[2019-11-06 22:13:36,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2701 states.
[2019-11-06 22:13:36,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3924 transitions.
[2019-11-06 22:13:36,584 INFO  L78                 Accepts]: Start accepts. Automaton has 2701 states and 3924 transitions. Word has length 150
[2019-11-06 22:13:36,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:36,585 INFO  L462      AbstractCegarLoop]: Abstraction has 2701 states and 3924 transitions.
[2019-11-06 22:13:36,585 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:36,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 2701 states and 3924 transitions.
[2019-11-06 22:13:36,592 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-11-06 22:13:36,592 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:36,592 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:36,593 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:36,593 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:36,593 INFO  L82        PathProgramCache]: Analyzing trace with hash -1681251574, now seen corresponding path program 1 times
[2019-11-06 22:13:36,594 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:36,594 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325002951]
[2019-11-06 22:13:36,594 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:36,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:36,903 WARN  L191               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:36,907 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:36,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:36,943 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325002951]
[2019-11-06 22:13:36,943 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:36,944 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:36,944 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213609806]
[2019-11-06 22:13:36,945 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:36,945 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:36,946 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:36,946 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:36,946 INFO  L87              Difference]: Start difference. First operand 2701 states and 3924 transitions. Second operand 4 states.
[2019-11-06 22:13:39,113 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:39,113 INFO  L93              Difference]: Finished difference Result 7038 states and 10298 transitions.
[2019-11-06 22:13:39,114 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:39,114 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 152
[2019-11-06 22:13:39,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:39,133 INFO  L225             Difference]: With dead ends: 7038
[2019-11-06 22:13:39,134 INFO  L226             Difference]: Without dead ends: 4666
[2019-11-06 22:13:39,139 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:39,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4666 states.
[2019-11-06 22:13:39,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4664.
[2019-11-06 22:13:39,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4664 states.
[2019-11-06 22:13:39,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6720 transitions.
[2019-11-06 22:13:39,413 INFO  L78                 Accepts]: Start accepts. Automaton has 4664 states and 6720 transitions. Word has length 152
[2019-11-06 22:13:39,413 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:39,414 INFO  L462      AbstractCegarLoop]: Abstraction has 4664 states and 6720 transitions.
[2019-11-06 22:13:39,414 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:39,414 INFO  L276                IsEmpty]: Start isEmpty. Operand 4664 states and 6720 transitions.
[2019-11-06 22:13:39,420 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-11-06 22:13:39,420 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:39,420 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:39,421 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:39,421 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:39,421 INFO  L82        PathProgramCache]: Analyzing trace with hash -344412185, now seen corresponding path program 1 times
[2019-11-06 22:13:39,421 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:39,421 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011950163]
[2019-11-06 22:13:39,422 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:39,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:39,800 WARN  L191               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:39,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:39,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:39,835 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011950163]
[2019-11-06 22:13:39,835 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:39,835 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:39,836 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053347489]
[2019-11-06 22:13:39,836 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:39,836 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:39,836 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:39,837 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:39,837 INFO  L87              Difference]: Start difference. First operand 4664 states and 6720 transitions. Second operand 5 states.
[2019-11-06 22:13:41,016 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:41,017 INFO  L93              Difference]: Finished difference Result 7769 states and 11256 transitions.
[2019-11-06 22:13:41,017 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:41,017 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 152
[2019-11-06 22:13:41,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:41,034 INFO  L225             Difference]: With dead ends: 7769
[2019-11-06 22:13:41,034 INFO  L226             Difference]: Without dead ends: 4098
[2019-11-06 22:13:41,042 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:41,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4098 states.
[2019-11-06 22:13:41,257 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 4098.
[2019-11-06 22:13:41,257 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4098 states.
[2019-11-06 22:13:41,265 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5895 transitions.
[2019-11-06 22:13:41,266 INFO  L78                 Accepts]: Start accepts. Automaton has 4098 states and 5895 transitions. Word has length 152
[2019-11-06 22:13:41,266 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:41,266 INFO  L462      AbstractCegarLoop]: Abstraction has 4098 states and 5895 transitions.
[2019-11-06 22:13:41,266 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:41,269 INFO  L276                IsEmpty]: Start isEmpty. Operand 4098 states and 5895 transitions.
[2019-11-06 22:13:41,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2019-11-06 22:13:41,276 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:41,276 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:41,276 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:41,278 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:41,278 INFO  L82        PathProgramCache]: Analyzing trace with hash 71132805, now seen corresponding path program 1 times
[2019-11-06 22:13:41,278 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:41,279 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228608923]
[2019-11-06 22:13:41,279 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:41,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:41,570 WARN  L191               SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:41,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:41,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:41,598 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228608923]
[2019-11-06 22:13:41,598 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:41,598 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:41,599 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220264896]
[2019-11-06 22:13:41,599 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:41,599 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:41,600 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:41,600 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:41,600 INFO  L87              Difference]: Start difference. First operand 4098 states and 5895 transitions. Second operand 4 states.
[2019-11-06 22:13:41,870 WARN  L191               SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 174
[2019-11-06 22:13:43,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:43,304 INFO  L93              Difference]: Finished difference Result 10865 states and 15855 transitions.
[2019-11-06 22:13:43,305 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:43,305 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 155
[2019-11-06 22:13:43,305 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:43,333 INFO  L225             Difference]: With dead ends: 10865
[2019-11-06 22:13:43,333 INFO  L226             Difference]: Without dead ends: 7902
[2019-11-06 22:13:43,339 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 22:13:43,347 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7902 states.
[2019-11-06 22:13:43,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7900.
[2019-11-06 22:13:43,721 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7900 states.
[2019-11-06 22:13:43,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 11351 transitions.
[2019-11-06 22:13:43,730 INFO  L78                 Accepts]: Start accepts. Automaton has 7900 states and 11351 transitions. Word has length 155
[2019-11-06 22:13:43,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:43,730 INFO  L462      AbstractCegarLoop]: Abstraction has 7900 states and 11351 transitions.
[2019-11-06 22:13:43,730 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:43,730 INFO  L276                IsEmpty]: Start isEmpty. Operand 7900 states and 11351 transitions.
[2019-11-06 22:13:43,739 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2019-11-06 22:13:43,740 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:43,740 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:43,740 INFO  L410      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:43,740 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:43,741 INFO  L82        PathProgramCache]: Analyzing trace with hash 1126763328, now seen corresponding path program 1 times
[2019-11-06 22:13:43,741 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:43,741 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818723645]
[2019-11-06 22:13:43,741 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:43,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:44,165 WARN  L191               SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-11-06 22:13:44,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:44,207 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:44,208 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818723645]
[2019-11-06 22:13:44,208 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:44,208 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:44,209 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924725532]
[2019-11-06 22:13:44,209 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:44,209 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:44,209 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:44,210 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:44,210 INFO  L87              Difference]: Start difference. First operand 7900 states and 11351 transitions. Second operand 5 states.
[2019-11-06 22:13:46,667 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:46,667 INFO  L93              Difference]: Finished difference Result 23082 states and 33193 transitions.
[2019-11-06 22:13:46,667 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:46,667 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 155
[2019-11-06 22:13:46,668 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:46,696 INFO  L225             Difference]: With dead ends: 23082
[2019-11-06 22:13:46,696 INFO  L226             Difference]: Without dead ends: 15225
[2019-11-06 22:13:46,709 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:46,725 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15225 states.