/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 22:15:04,128 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 22:15:04,216 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-06 22:15:04,244 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 22:15:04,249 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 22:15:04,250 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 22:15:04,253 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 22:15:04,253 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 22:15:04,253 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 22:15:04,253 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 22:15:04,254 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 22:15:04,254 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 22:15:04,254 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 22:15:04,254 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 22:15:04,254 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 22:15:04,255 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 22:15:04,255 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 22:15:04,255 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 22:15:04,255 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 22:15:04,255 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 22:15:04,256 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 22:15:04,258 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 22:15:04,259 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 22:15:04,259 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 22:15:04,259 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:15:04,259 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 22:15:04,260 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 22:15:04,260 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 22:15:04,260 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 22:15:04,260 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 22:15:04,260 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 22:15:04,260 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 22:15:04,587 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 22:15:04,606 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 22:15:04,610 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 22:15:04,611 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 22:15:04,612 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 22:15:04,612 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-11-06 22:15:04,683 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781a9f963/fac95716c2c74e78886d45b495f88be7/FLAG821d5dda9
[2019-11-06 22:15:05,243 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 22:15:05,243 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-11-06 22:15:05,261 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781a9f963/fac95716c2c74e78886d45b495f88be7/FLAG821d5dda9
[2019-11-06 22:15:05,513 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781a9f963/fac95716c2c74e78886d45b495f88be7
[2019-11-06 22:15:05,521 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 22:15:05,523 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 22:15:05,528 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 22:15:05,528 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 22:15:05,531 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 22:15:05,533 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:05" (1/1) ...
[2019-11-06 22:15:05,536 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ab0e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:05, skipping insertion in model container
[2019-11-06 22:15:05,536 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:05" (1/1) ...
[2019-11-06 22:15:05,544 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 22:15:05,618 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 22:15:06,348 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:15:06,360 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 22:15:06,573 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:15:06,596 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 22:15:06,597 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06 WrapperNode
[2019-11-06 22:15:06,597 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 22:15:06,598 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 22:15:06,598 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 22:15:06,599 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 22:15:06,614 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
[2019-11-06 22:15:06,615 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
[2019-11-06 22:15:06,660 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
[2019-11-06 22:15:06,660 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
[2019-11-06 22:15:06,726 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
[2019-11-06 22:15:06,771 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
[2019-11-06 22:15:06,783 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
[2019-11-06 22:15:06,805 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 22:15:06,806 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 22:15:06,806 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 22:15:06,806 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 22:15:06,807 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:15:06,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 22:15:06,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 22:15:06,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 22:15:06,893 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 22:15:06,893 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-11-06 22:15:06,894 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-11-06 22:15:06,894 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-11-06 22:15:06,894 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-11-06 22:15:06,895 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-11-06 22:15:06,895 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-11-06 22:15:06,895 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-11-06 22:15:06,896 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-11-06 22:15:06,896 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-11-06 22:15:06,897 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-11-06 22:15:06,897 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-11-06 22:15:06,898 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 22:15:06,900 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 22:15:06,900 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 22:15:08,840 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 22:15:08,840 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-06 22:15:08,845 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:08 BoogieIcfgContainer
[2019-11-06 22:15:08,845 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 22:15:08,846 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 22:15:08,846 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 22:15:08,850 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 22:15:08,850 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:15:05" (1/3) ...
[2019-11-06 22:15:08,852 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6d31ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:08, skipping insertion in model container
[2019-11-06 22:15:08,852 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:06" (2/3) ...
[2019-11-06 22:15:08,853 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6d31ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:08, skipping insertion in model container
[2019-11-06 22:15:08,853 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:08" (3/3) ...
[2019-11-06 22:15:08,859 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-11-06 22:15:08,870 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 22:15:08,898 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-11-06 22:15:08,910 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-11-06 22:15:08,941 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 22:15:08,941 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 22:15:08,941 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 22:15:08,942 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 22:15:08,942 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 22:15:08,942 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 22:15:08,942 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 22:15:08,942 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 22:15:08,972 INFO  L276                IsEmpty]: Start isEmpty. Operand 418 states.
[2019-11-06 22:15:08,990 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-11-06 22:15:08,991 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:08,992 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 22:15:08,994 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:09,000 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:09,001 INFO  L82        PathProgramCache]: Analyzing trace with hash 42890573, now seen corresponding path program 1 times
[2019-11-06 22:15:09,009 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:09,010 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86441597]
[2019-11-06 22:15:09,010 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:09,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:10,382 WARN  L191               SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:10,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:10,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:10,504 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86441597]
[2019-11-06 22:15:10,505 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:10,505 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:10,508 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395848061]
[2019-11-06 22:15:10,514 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:10,514 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:10,528 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:10,529 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:10,531 INFO  L87              Difference]: Start difference. First operand 418 states. Second operand 5 states.
[2019-11-06 22:15:14,528 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:14,529 INFO  L93              Difference]: Finished difference Result 1212 states and 2155 transitions.
[2019-11-06 22:15:14,529 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-06 22:15:14,531 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 152
[2019-11-06 22:15:14,532 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:14,552 INFO  L225             Difference]: With dead ends: 1212
[2019-11-06 22:15:14,553 INFO  L226             Difference]: Without dead ends: 799
[2019-11-06 22:15:14,560 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:15:14,586 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 799 states.
[2019-11-06 22:15:14,697 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 773.
[2019-11-06 22:15:14,698 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 773 states.
[2019-11-06 22:15:14,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1109 transitions.
[2019-11-06 22:15:14,705 INFO  L78                 Accepts]: Start accepts. Automaton has 773 states and 1109 transitions. Word has length 152
[2019-11-06 22:15:14,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:14,707 INFO  L462      AbstractCegarLoop]: Abstraction has 773 states and 1109 transitions.
[2019-11-06 22:15:14,707 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:14,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 773 states and 1109 transitions.
[2019-11-06 22:15:14,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-11-06 22:15:14,718 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:14,719 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:14,719 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:14,720 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:14,720 INFO  L82        PathProgramCache]: Analyzing trace with hash -832663523, now seen corresponding path program 1 times
[2019-11-06 22:15:14,720 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:14,721 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447593589]
[2019-11-06 22:15:14,721 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:14,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:15,146 WARN  L191               SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:15,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:15,183 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:15,184 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447593589]
[2019-11-06 22:15:15,184 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:15,184 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:15,184 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123159419]
[2019-11-06 22:15:15,186 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:15,186 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:15,187 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:15,187 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:15,187 INFO  L87              Difference]: Start difference. First operand 773 states and 1109 transitions. Second operand 4 states.
[2019-11-06 22:15:17,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:17,580 INFO  L93              Difference]: Finished difference Result 2273 states and 3257 transitions.
[2019-11-06 22:15:17,581 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:17,581 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 153
[2019-11-06 22:15:17,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:17,590 INFO  L225             Difference]: With dead ends: 2273
[2019-11-06 22:15:17,591 INFO  L226             Difference]: Without dead ends: 1532
[2019-11-06 22:15:17,595 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 22:15:17,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1532 states.
[2019-11-06 22:15:17,685 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 775.
[2019-11-06 22:15:17,686 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 775 states.
[2019-11-06 22:15:17,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1111 transitions.
[2019-11-06 22:15:17,690 INFO  L78                 Accepts]: Start accepts. Automaton has 775 states and 1111 transitions. Word has length 153
[2019-11-06 22:15:17,692 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:17,692 INFO  L462      AbstractCegarLoop]: Abstraction has 775 states and 1111 transitions.
[2019-11-06 22:15:17,692 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:17,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 775 states and 1111 transitions.
[2019-11-06 22:15:17,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2019-11-06 22:15:17,696 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:17,696 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:17,698 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:17,698 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:17,698 INFO  L82        PathProgramCache]: Analyzing trace with hash 1878298894, now seen corresponding path program 1 times
[2019-11-06 22:15:17,698 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:17,699 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719453079]
[2019-11-06 22:15:17,699 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:17,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:18,322 WARN  L191               SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:18,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:18,393 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:18,393 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719453079]
[2019-11-06 22:15:18,394 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:18,394 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:18,395 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594312642]
[2019-11-06 22:15:18,396 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:18,397 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:18,400 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:18,401 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:18,401 INFO  L87              Difference]: Start difference. First operand 775 states and 1111 transitions. Second operand 5 states.
[2019-11-06 22:15:20,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:20,302 INFO  L93              Difference]: Finished difference Result 1532 states and 2197 transitions.
[2019-11-06 22:15:20,306 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:20,306 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 154
[2019-11-06 22:15:20,306 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:20,312 INFO  L225             Difference]: With dead ends: 1532
[2019-11-06 22:15:20,313 INFO  L226             Difference]: Without dead ends: 775
[2019-11-06 22:15:20,317 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:15:20,318 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 775 states.
[2019-11-06 22:15:20,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 774.
[2019-11-06 22:15:20,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 774 states.
[2019-11-06 22:15:20,346 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1108 transitions.
[2019-11-06 22:15:20,346 INFO  L78                 Accepts]: Start accepts. Automaton has 774 states and 1108 transitions. Word has length 154
[2019-11-06 22:15:20,347 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:20,347 INFO  L462      AbstractCegarLoop]: Abstraction has 774 states and 1108 transitions.
[2019-11-06 22:15:20,347 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:20,347 INFO  L276                IsEmpty]: Start isEmpty. Operand 774 states and 1108 transitions.
[2019-11-06 22:15:20,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2019-11-06 22:15:20,350 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:20,350 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:20,350 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:20,350 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:20,351 INFO  L82        PathProgramCache]: Analyzing trace with hash 1636071890, now seen corresponding path program 1 times
[2019-11-06 22:15:20,351 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:20,351 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093990561]
[2019-11-06 22:15:20,351 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:20,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:20,947 WARN  L191               SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:20,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:21,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:21,022 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093990561]
[2019-11-06 22:15:21,023 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:21,023 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:21,023 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741311895]
[2019-11-06 22:15:21,024 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:21,024 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:21,025 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:21,026 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:21,026 INFO  L87              Difference]: Start difference. First operand 774 states and 1108 transitions. Second operand 5 states.
[2019-11-06 22:15:22,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:22,688 INFO  L93              Difference]: Finished difference Result 1535 states and 2199 transitions.
[2019-11-06 22:15:22,688 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:22,689 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 154
[2019-11-06 22:15:22,689 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:22,692 INFO  L225             Difference]: With dead ends: 1535
[2019-11-06 22:15:22,692 INFO  L226             Difference]: Without dead ends: 772
[2019-11-06 22:15:22,694 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:15:22,696 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 772 states.
[2019-11-06 22:15:22,720 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772.
[2019-11-06 22:15:22,720 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 772 states.
[2019-11-06 22:15:22,723 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1104 transitions.
[2019-11-06 22:15:22,724 INFO  L78                 Accepts]: Start accepts. Automaton has 772 states and 1104 transitions. Word has length 154
[2019-11-06 22:15:22,724 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:22,724 INFO  L462      AbstractCegarLoop]: Abstraction has 772 states and 1104 transitions.
[2019-11-06 22:15:22,724 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:22,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 772 states and 1104 transitions.
[2019-11-06 22:15:22,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2019-11-06 22:15:22,727 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:22,727 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:22,727 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:22,727 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:22,728 INFO  L82        PathProgramCache]: Analyzing trace with hash -674126987, now seen corresponding path program 1 times
[2019-11-06 22:15:22,728 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:22,728 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48753772]
[2019-11-06 22:15:22,728 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:22,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:23,080 WARN  L191               SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:23,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:23,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:23,131 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48753772]
[2019-11-06 22:15:23,131 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:23,131 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:23,131 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302244613]
[2019-11-06 22:15:23,132 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:23,132 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:23,132 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:23,133 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:23,133 INFO  L87              Difference]: Start difference. First operand 772 states and 1104 transitions. Second operand 4 states.
[2019-11-06 22:15:26,500 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:26,500 INFO  L93              Difference]: Finished difference Result 1732 states and 2480 transitions.
[2019-11-06 22:15:26,501 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:26,501 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 154
[2019-11-06 22:15:26,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:26,509 INFO  L225             Difference]: With dead ends: 1732
[2019-11-06 22:15:26,509 INFO  L226             Difference]: Without dead ends: 1156
[2019-11-06 22:15:26,511 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:26,512 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1156 states.
[2019-11-06 22:15:26,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1130.
[2019-11-06 22:15:26,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1130 states.
[2019-11-06 22:15:26,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1602 transitions.
[2019-11-06 22:15:26,550 INFO  L78                 Accepts]: Start accepts. Automaton has 1130 states and 1602 transitions. Word has length 154
[2019-11-06 22:15:26,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:26,551 INFO  L462      AbstractCegarLoop]: Abstraction has 1130 states and 1602 transitions.
[2019-11-06 22:15:26,551 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:26,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 1130 states and 1602 transitions.
[2019-11-06 22:15:26,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2019-11-06 22:15:26,554 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:26,554 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:26,555 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:26,555 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:26,555 INFO  L82        PathProgramCache]: Analyzing trace with hash -1140766677, now seen corresponding path program 1 times
[2019-11-06 22:15:26,555 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:26,556 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037369131]
[2019-11-06 22:15:26,556 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:26,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:26,871 WARN  L191               SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:26,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:26,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:26,933 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037369131]
[2019-11-06 22:15:26,934 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:26,934 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:26,935 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668342778]
[2019-11-06 22:15:26,935 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:26,936 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:26,936 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:26,936 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:26,937 INFO  L87              Difference]: Start difference. First operand 1130 states and 1602 transitions. Second operand 4 states.
[2019-11-06 22:15:29,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:29,079 INFO  L93              Difference]: Finished difference Result 2442 states and 3547 transitions.
[2019-11-06 22:15:29,079 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:29,079 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 156
[2019-11-06 22:15:29,079 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:29,086 INFO  L225             Difference]: With dead ends: 2442
[2019-11-06 22:15:29,087 INFO  L226             Difference]: Without dead ends: 1501
[2019-11-06 22:15:29,089 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:29,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1501 states.
[2019-11-06 22:15:29,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1342.
[2019-11-06 22:15:29,135 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1342 states.
[2019-11-06 22:15:29,139 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1945 transitions.
[2019-11-06 22:15:29,139 INFO  L78                 Accepts]: Start accepts. Automaton has 1342 states and 1945 transitions. Word has length 156
[2019-11-06 22:15:29,139 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:29,139 INFO  L462      AbstractCegarLoop]: Abstraction has 1342 states and 1945 transitions.
[2019-11-06 22:15:29,140 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:29,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 1342 states and 1945 transitions.
[2019-11-06 22:15:29,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:15:29,143 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:29,143 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:29,143 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:29,143 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:29,144 INFO  L82        PathProgramCache]: Analyzing trace with hash 1542236816, now seen corresponding path program 1 times
[2019-11-06 22:15:29,144 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:29,144 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155388110]
[2019-11-06 22:15:29,144 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:29,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:29,475 WARN  L191               SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:29,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:29,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:29,544 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155388110]
[2019-11-06 22:15:29,544 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:29,544 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:29,545 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699448407]
[2019-11-06 22:15:29,545 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:29,545 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:29,546 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:29,546 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:29,546 INFO  L87              Difference]: Start difference. First operand 1342 states and 1945 transitions. Second operand 4 states.
[2019-11-06 22:15:31,853 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:31,853 INFO  L93              Difference]: Finished difference Result 2987 states and 4450 transitions.
[2019-11-06 22:15:31,855 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:31,855 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 158
[2019-11-06 22:15:31,856 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:31,864 INFO  L225             Difference]: With dead ends: 2987
[2019-11-06 22:15:31,864 INFO  L226             Difference]: Without dead ends: 1918
[2019-11-06 22:15:31,867 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:31,869 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1918 states.
[2019-11-06 22:15:31,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1719.
[2019-11-06 22:15:31,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1719 states.
[2019-11-06 22:15:31,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2553 transitions.
[2019-11-06 22:15:31,935 INFO  L78                 Accepts]: Start accepts. Automaton has 1719 states and 2553 transitions. Word has length 158
[2019-11-06 22:15:31,936 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:31,936 INFO  L462      AbstractCegarLoop]: Abstraction has 1719 states and 2553 transitions.
[2019-11-06 22:15:31,936 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:31,936 INFO  L276                IsEmpty]: Start isEmpty. Operand 1719 states and 2553 transitions.
[2019-11-06 22:15:31,939 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2019-11-06 22:15:31,939 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:31,939 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:31,939 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:31,940 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:31,940 INFO  L82        PathProgramCache]: Analyzing trace with hash 1399172685, now seen corresponding path program 1 times
[2019-11-06 22:15:31,940 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:31,940 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372384709]
[2019-11-06 22:15:31,941 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:31,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:32,320 WARN  L191               SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:32,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:32,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:32,370 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372384709]
[2019-11-06 22:15:32,370 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:32,371 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:32,371 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90075796]
[2019-11-06 22:15:32,371 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-06 22:15:32,372 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:32,372 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-06 22:15:32,372 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:15:32,372 INFO  L87              Difference]: Start difference. First operand 1719 states and 2553 transitions. Second operand 6 states.
[2019-11-06 22:15:32,673 WARN  L191               SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 208
[2019-11-06 22:15:34,580 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:34,581 INFO  L93              Difference]: Finished difference Result 4371 states and 6633 transitions.
[2019-11-06 22:15:34,587 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 22:15:34,587 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 159
[2019-11-06 22:15:34,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:34,598 INFO  L225             Difference]: With dead ends: 4371
[2019-11-06 22:15:34,598 INFO  L226             Difference]: Without dead ends: 2835
[2019-11-06 22:15:34,602 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2019-11-06 22:15:34,605 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2835 states.
[2019-11-06 22:15:34,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2833.
[2019-11-06 22:15:34,716 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2833 states.
[2019-11-06 22:15:34,723 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 4278 transitions.
[2019-11-06 22:15:34,723 INFO  L78                 Accepts]: Start accepts. Automaton has 2833 states and 4278 transitions. Word has length 159
[2019-11-06 22:15:34,723 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:34,724 INFO  L462      AbstractCegarLoop]: Abstraction has 2833 states and 4278 transitions.
[2019-11-06 22:15:34,724 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-06 22:15:34,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 2833 states and 4278 transitions.
[2019-11-06 22:15:34,727 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2019-11-06 22:15:34,727 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:34,727 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:34,728 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:34,728 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:34,728 INFO  L82        PathProgramCache]: Analyzing trace with hash -1519156504, now seen corresponding path program 1 times
[2019-11-06 22:15:34,728 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:34,729 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817843113]
[2019-11-06 22:15:34,729 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:34,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:35,124 WARN  L191               SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:35,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:35,185 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:35,186 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817843113]
[2019-11-06 22:15:35,186 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:35,186 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:35,187 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504783977]
[2019-11-06 22:15:35,187 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:35,187 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:35,188 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:35,188 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:35,188 INFO  L87              Difference]: Start difference. First operand 2833 states and 4278 transitions. Second operand 5 states.
[2019-11-06 22:15:38,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:38,161 INFO  L93              Difference]: Finished difference Result 7338 states and 11090 transitions.
[2019-11-06 22:15:38,161 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:38,162 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 159
[2019-11-06 22:15:38,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:38,179 INFO  L225             Difference]: With dead ends: 7338
[2019-11-06 22:15:38,179 INFO  L226             Difference]: Without dead ends: 4536
[2019-11-06 22:15:38,185 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 22:15:38,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4536 states.
[2019-11-06 22:15:38,383 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4513.
[2019-11-06 22:15:38,383 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4513 states.
[2019-11-06 22:15:38,392 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 6769 transitions.
[2019-11-06 22:15:38,392 INFO  L78                 Accepts]: Start accepts. Automaton has 4513 states and 6769 transitions. Word has length 159
[2019-11-06 22:15:38,392 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:38,393 INFO  L462      AbstractCegarLoop]: Abstraction has 4513 states and 6769 transitions.
[2019-11-06 22:15:38,393 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:38,393 INFO  L276                IsEmpty]: Start isEmpty. Operand 4513 states and 6769 transitions.
[2019-11-06 22:15:38,397 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2019-11-06 22:15:38,398 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:38,398 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:38,398 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:38,398 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:38,399 INFO  L82        PathProgramCache]: Analyzing trace with hash 779025742, now seen corresponding path program 1 times
[2019-11-06 22:15:38,399 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:38,399 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316748438]
[2019-11-06 22:15:38,399 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:38,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:38,712 WARN  L191               SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:38,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:38,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:38,755 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316748438]
[2019-11-06 22:15:38,756 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:38,756 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:38,756 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526565585]
[2019-11-06 22:15:38,757 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:38,757 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:38,757 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:38,757 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:38,757 INFO  L87              Difference]: Start difference. First operand 4513 states and 6769 transitions. Second operand 4 states.
[2019-11-06 22:15:40,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:40,989 INFO  L93              Difference]: Finished difference Result 11128 states and 16749 transitions.
[2019-11-06 22:15:40,989 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:40,990 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 161
[2019-11-06 22:15:40,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:41,012 INFO  L225             Difference]: With dead ends: 11128
[2019-11-06 22:15:41,012 INFO  L226             Difference]: Without dead ends: 6987
[2019-11-06 22:15:41,021 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:41,029 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6987 states.
[2019-11-06 22:15:41,379 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6987 to 6966.
[2019-11-06 22:15:41,379 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6966 states.
[2019-11-06 22:15:41,389 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6966 states to 6966 states and 10335 transitions.
[2019-11-06 22:15:41,390 INFO  L78                 Accepts]: Start accepts. Automaton has 6966 states and 10335 transitions. Word has length 161
[2019-11-06 22:15:41,390 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:41,390 INFO  L462      AbstractCegarLoop]: Abstraction has 6966 states and 10335 transitions.
[2019-11-06 22:15:41,390 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:41,390 INFO  L276                IsEmpty]: Start isEmpty. Operand 6966 states and 10335 transitions.
[2019-11-06 22:15:41,397 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2019-11-06 22:15:41,397 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:41,398 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:15:41,398 INFO  L410      AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:41,398 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:41,398 INFO  L82        PathProgramCache]: Analyzing trace with hash -169339511, now seen corresponding path program 1 times
[2019-11-06 22:15:41,399 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:41,399 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406880909]
[2019-11-06 22:15:41,399 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:41,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:41,709 WARN  L191               SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202
[2019-11-06 22:15:41,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:41,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:15:41,743 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406880909]
[2019-11-06 22:15:41,743 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:41,743 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:41,744 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820660296]
[2019-11-06 22:15:41,744 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:41,744 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:41,744 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:41,745 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:41,745 INFO  L87              Difference]: Start difference. First operand 6966 states and 10335 transitions. Second operand 4 states.