/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 21:08:57,309 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-23 21:08:57,312 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-11-23 21:08:57,373 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
[2019-11-23 21:08:57,395 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 21:08:57,395 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 21:08:57,397 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 21:08:57,397 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 21:08:57,397 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 21:08:57,397 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 21:08:57,397 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 21:08:57,398 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 21:08:57,398 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 21:08:57,398 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 21:08:57,399 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 21:08:57,399 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 21:08:57,399 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 21:08:57,400 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 21:08:57,400 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 21:08:57,400 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 21:08:57,400 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 21:08:57,401 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 21:08:57,401 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 21:08:57,401 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 21:08:57,401 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 21:08:57,402 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 21:08:57,402 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 21:08:57,402 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 21:08:57,402 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 21:08:57,402 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 21:08:57,403 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 21:08:57,403 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 21:08:57,403 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 21:08:57,403 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 21:08:57,681 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 21:08:57,701 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 21:08:57,705 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 21:08:57,706 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 21:08:57,706 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 21:08:57,707 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36.c
[2019-11-23 21:08:57,776 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1e4bb48/bed355fe952d4eebab933b2d5798f3e3/FLAG3f57cb1df
[2019-11-23 21:08:58,494 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 21:08:58,495 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label36.c
[2019-11-23 21:08:58,522 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1e4bb48/bed355fe952d4eebab933b2d5798f3e3/FLAG3f57cb1df
[2019-11-23 21:08:58,655 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1e4bb48/bed355fe952d4eebab933b2d5798f3e3
[2019-11-23 21:08:58,668 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 21:08:58,670 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 21:08:58,674 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 21:08:58,675 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 21:08:58,678 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 21:08:58,680 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:58" (1/1) ...
[2019-11-23 21:08:58,683 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bf5d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:58, skipping insertion in model container
[2019-11-23 21:08:58,683 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:58" (1/1) ...
[2019-11-23 21:08:58,692 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 21:08:58,845 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 21:09:00,746 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:09:00,755 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 21:09:01,300 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 21:09:01,328 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 21:09:01,330 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01 WrapperNode
[2019-11-23 21:09:01,330 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 21:09:01,331 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 21:09:01,331 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 21:09:01,331 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 21:09:01,340 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,401 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,652 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 21:09:01,653 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 21:09:01,653 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 21:09:01,653 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 21:09:01,663 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,663 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,690 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,691 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,866 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,905 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:01,979 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (1/1) ...
[2019-11-23 21:09:02,733 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 21:09:02,733 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 21:09:02,734 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 21:09:02,734 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 21:09:02,735 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (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
[2019-11-23 21:09:02,812 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 21:09:02,812 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 21:09:07,566 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 21:09:07,566 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 21:09:07,568 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:07 BoogieIcfgContainer
[2019-11-23 21:09:07,568 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 21:09:07,571 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 21:09:07,571 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 21:09:07,575 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 21:09:07,576 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:58" (1/3) ...
[2019-11-23 21:09:07,577 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d77392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:07, skipping insertion in model container
[2019-11-23 21:09:07,577 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:01" (2/3) ...
[2019-11-23 21:09:07,578 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d77392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:07, skipping insertion in model container
[2019-11-23 21:09:07,578 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:07" (3/3) ...
[2019-11-23 21:09:07,580 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label36.c
[2019-11-23 21:09:07,590 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 21:09:07,599 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 21:09:07,611 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 21:09:07,664 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 21:09:07,665 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 21:09:07,665 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 21:09:07,665 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 21:09:07,665 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 21:09:07,666 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 21:09:07,666 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 21:09:07,666 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 21:09:07,701 INFO  L276                IsEmpty]: Start isEmpty. Operand 818 states.
[2019-11-23 21:09:07,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2019-11-23 21:09:07,712 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:07,713 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]
[2019-11-23 21:09:07,714 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:07,720 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:07,720 INFO  L82        PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times
[2019-11-23 21:09:07,730 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:07,731 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632333970]
[2019-11-23 21:09:07,731 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:07,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:08,100 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:08,101 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632333970]
[2019-11-23 21:09:08,103 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:08,103 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:09:08,105 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218828046]
[2019-11-23 21:09:08,110 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:08,110 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:08,124 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:08,125 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:08,127 INFO  L87              Difference]: Start difference. First operand 818 states. Second operand 4 states.
[2019-11-23 21:09:16,096 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:16,097 INFO  L93              Difference]: Finished difference Result 3142 states and 6130 transitions.
[2019-11-23 21:09:16,098 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:16,099 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 57
[2019-11-23 21:09:16,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:16,164 INFO  L225             Difference]: With dead ends: 3142
[2019-11-23 21:09:16,164 INFO  L226             Difference]: Without dead ends: 2257
[2019-11-23 21:09:16,172 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:16,205 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2257 states.
[2019-11-23 21:09:16,410 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257.
[2019-11-23 21:09:16,412 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2257 states.
[2019-11-23 21:09:16,425 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3685 transitions.
[2019-11-23 21:09:16,427 INFO  L78                 Accepts]: Start accepts. Automaton has 2257 states and 3685 transitions. Word has length 57
[2019-11-23 21:09:16,428 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:16,428 INFO  L462      AbstractCegarLoop]: Abstraction has 2257 states and 3685 transitions.
[2019-11-23 21:09:16,428 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:16,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 2257 states and 3685 transitions.
[2019-11-23 21:09:16,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2019-11-23 21:09:16,440 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:16,441 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:16,443 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:16,443 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:16,444 INFO  L82        PathProgramCache]: Analyzing trace with hash -1342956245, now seen corresponding path program 1 times
[2019-11-23 21:09:16,444 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:16,445 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524293474]
[2019-11-23 21:09:16,445 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:16,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:17,090 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:17,091 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524293474]
[2019-11-23 21:09:17,091 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69206104]
[2019-11-23 21:09:17,091 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:09:17,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:17,215 INFO  L255         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:09:17,241 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:09:17,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:17,333 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:09:17,334 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:09:17,335 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940844043]
[2019-11-23 21:09:17,336 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:09:17,337 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:17,338 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:09:17,338 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:09:17,338 INFO  L87              Difference]: Start difference. First operand 2257 states and 3685 transitions. Second operand 3 states.
[2019-11-23 21:09:22,450 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:22,450 INFO  L93              Difference]: Finished difference Result 6765 states and 11050 transitions.
[2019-11-23 21:09:22,451 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:09:22,451 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 128
[2019-11-23 21:09:22,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:22,475 INFO  L225             Difference]: With dead ends: 6765
[2019-11-23 21:09:22,475 INFO  L226             Difference]: Without dead ends: 4510
[2019-11-23 21:09:22,479 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:09:22,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4510 states.
[2019-11-23 21:09:22,546 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510.
[2019-11-23 21:09:22,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4510 states.
[2019-11-23 21:09:22,555 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 6916 transitions.
[2019-11-23 21:09:22,556 INFO  L78                 Accepts]: Start accepts. Automaton has 4510 states and 6916 transitions. Word has length 128
[2019-11-23 21:09:22,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:22,557 INFO  L462      AbstractCegarLoop]: Abstraction has 4510 states and 6916 transitions.
[2019-11-23 21:09:22,557 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:09:22,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 4510 states and 6916 transitions.
[2019-11-23 21:09:22,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2019-11-23 21:09:22,559 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:22,559 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:22,763 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:09:22,763 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:22,763 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:22,764 INFO  L82        PathProgramCache]: Analyzing trace with hash -1454754699, now seen corresponding path program 1 times
[2019-11-23 21:09:22,765 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:22,766 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437426764]
[2019-11-23 21:09:22,766 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:22,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:22,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:22,949 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437426764]
[2019-11-23 21:09:22,950 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:22,950 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:09:22,950 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779770263]
[2019-11-23 21:09:22,952 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:22,952 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:22,953 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:22,953 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:22,953 INFO  L87              Difference]: Start difference. First operand 4510 states and 6916 transitions. Second operand 4 states.
[2019-11-23 21:09:30,027 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:30,028 INFO  L93              Difference]: Finished difference Result 18030 states and 27656 transitions.
[2019-11-23 21:09:30,030 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:30,031 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 132
[2019-11-23 21:09:30,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:30,084 INFO  L225             Difference]: With dead ends: 18030
[2019-11-23 21:09:30,084 INFO  L226             Difference]: Without dead ends: 13522
[2019-11-23 21:09:30,092 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:30,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13522 states.
[2019-11-23 21:09:30,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13522 to 13522.
[2019-11-23 21:09:30,304 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 13522 states.
[2019-11-23 21:09:30,330 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13522 states to 13522 states and 18240 transitions.
[2019-11-23 21:09:30,331 INFO  L78                 Accepts]: Start accepts. Automaton has 13522 states and 18240 transitions. Word has length 132
[2019-11-23 21:09:30,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:30,332 INFO  L462      AbstractCegarLoop]: Abstraction has 13522 states and 18240 transitions.
[2019-11-23 21:09:30,332 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:30,332 INFO  L276                IsEmpty]: Start isEmpty. Operand 13522 states and 18240 transitions.
[2019-11-23 21:09:30,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2019-11-23 21:09:30,334 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:30,335 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:30,335 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:30,336 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:30,336 INFO  L82        PathProgramCache]: Analyzing trace with hash 279609700, now seen corresponding path program 1 times
[2019-11-23 21:09:30,336 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:30,337 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675093637]
[2019-11-23 21:09:30,337 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:30,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:30,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:30,454 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675093637]
[2019-11-23 21:09:30,454 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:30,454 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:09:30,454 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853027307]
[2019-11-23 21:09:30,455 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:09:30,455 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:30,456 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:09:30,456 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:30,456 INFO  L87              Difference]: Start difference. First operand 13522 states and 18240 transitions. Second operand 4 states.
[2019-11-23 21:09:37,866 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:37,866 INFO  L93              Difference]: Finished difference Result 51827 states and 70298 transitions.
[2019-11-23 21:09:37,868 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:37,868 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 138
[2019-11-23 21:09:37,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:37,978 INFO  L225             Difference]: With dead ends: 51827
[2019-11-23 21:09:37,978 INFO  L226             Difference]: Without dead ends: 38307
[2019-11-23 21:09:37,993 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:09:38,031 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38307 states.
[2019-11-23 21:09:38,399 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38307 to 24787.
[2019-11-23 21:09:38,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24787 states.
[2019-11-23 21:09:38,431 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24787 states to 24787 states and 31824 transitions.
[2019-11-23 21:09:38,431 INFO  L78                 Accepts]: Start accepts. Automaton has 24787 states and 31824 transitions. Word has length 138
[2019-11-23 21:09:38,432 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:38,432 INFO  L462      AbstractCegarLoop]: Abstraction has 24787 states and 31824 transitions.
[2019-11-23 21:09:38,432 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:09:38,432 INFO  L276                IsEmpty]: Start isEmpty. Operand 24787 states and 31824 transitions.
[2019-11-23 21:09:38,437 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2019-11-23 21:09:38,438 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:38,439 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:38,439 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:38,439 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:38,439 INFO  L82        PathProgramCache]: Analyzing trace with hash 775476627, now seen corresponding path program 1 times
[2019-11-23 21:09:38,440 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:38,441 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414010748]
[2019-11-23 21:09:38,441 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:38,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:38,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:38,749 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414010748]
[2019-11-23 21:09:38,752 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:09:38,752 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-23 21:09:38,752 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506883725]
[2019-11-23 21:09:38,753 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-23 21:09:38,753 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:38,753 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-23 21:09:38,753 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:09:38,754 INFO  L87              Difference]: Start difference. First operand 24787 states and 31824 transitions. Second operand 6 states.
[2019-11-23 21:09:47,083 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:47,084 INFO  L93              Difference]: Finished difference Result 50323 states and 64439 transitions.
[2019-11-23 21:09:47,086 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:09:47,086 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 143
[2019-11-23 21:09:47,087 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:47,119 INFO  L225             Difference]: With dead ends: 50323
[2019-11-23 21:09:47,120 INFO  L226             Difference]: Without dead ends: 25538
[2019-11-23 21:09:47,139 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:09:47,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25538 states.
[2019-11-23 21:09:47,423 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 25538.
[2019-11-23 21:09:47,424 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 25538 states.
[2019-11-23 21:09:47,453 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 32023 transitions.
[2019-11-23 21:09:47,454 INFO  L78                 Accepts]: Start accepts. Automaton has 25538 states and 32023 transitions. Word has length 143
[2019-11-23 21:09:47,454 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:47,454 INFO  L462      AbstractCegarLoop]: Abstraction has 25538 states and 32023 transitions.
[2019-11-23 21:09:47,455 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-23 21:09:47,455 INFO  L276                IsEmpty]: Start isEmpty. Operand 25538 states and 32023 transitions.
[2019-11-23 21:09:47,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2019-11-23 21:09:47,458 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:47,459 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:47,459 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:47,459 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:47,460 INFO  L82        PathProgramCache]: Analyzing trace with hash -1844489979, now seen corresponding path program 1 times
[2019-11-23 21:09:47,460 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:47,460 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515418824]
[2019-11-23 21:09:47,460 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:47,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:47,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 154 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2019-11-23 21:09:47,816 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515418824]
[2019-11-23 21:09:47,816 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537518042]
[2019-11-23 21:09:47,816 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:09:47,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:47,897 INFO  L255         TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:09:47,902 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:09:47,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 21:09:47,957 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:09:47,958 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2019-11-23 21:09:47,958 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434752443]
[2019-11-23 21:09:47,959 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:09:47,959 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:47,959 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:09:47,960 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:09:47,960 INFO  L87              Difference]: Start difference. First operand 25538 states and 32023 transitions. Second operand 3 states.
[2019-11-23 21:09:52,843 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:52,844 INFO  L93              Difference]: Finished difference Result 71351 states and 89775 transitions.
[2019-11-23 21:09:52,844 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:09:52,845 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 214
[2019-11-23 21:09:52,845 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:52,906 INFO  L225             Difference]: With dead ends: 71351
[2019-11-23 21:09:52,907 INFO  L226             Difference]: Without dead ends: 46566
[2019-11-23 21:09:52,934 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 213 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:09:53,007 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46566 states.
[2019-11-23 21:09:53,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46566 to 46566.
[2019-11-23 21:09:53,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46566 states.
[2019-11-23 21:09:53,721 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 55163 transitions.
[2019-11-23 21:09:53,722 INFO  L78                 Accepts]: Start accepts. Automaton has 46566 states and 55163 transitions. Word has length 214
[2019-11-23 21:09:53,722 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:53,722 INFO  L462      AbstractCegarLoop]: Abstraction has 46566 states and 55163 transitions.
[2019-11-23 21:09:53,722 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:09:53,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 46566 states and 55163 transitions.
[2019-11-23 21:09:53,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 238
[2019-11-23 21:09:53,726 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:53,726 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:09:53,930 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:09:53,930 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:09:53,931 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:09:53,931 INFO  L82        PathProgramCache]: Analyzing trace with hash 2011816120, now seen corresponding path program 1 times
[2019-11-23 21:09:53,931 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:09:53,931 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334141886]
[2019-11-23 21:09:53,931 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:09:53,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:54,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 154 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2019-11-23 21:09:54,243 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334141886]
[2019-11-23 21:09:54,243 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803162959]
[2019-11-23 21:09:54,243 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:09:54,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:09:54,332 INFO  L255         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-11-23 21:09:54,337 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:09:54,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2019-11-23 21:09:54,407 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:09:54,407 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2019-11-23 21:09:54,408 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310628144]
[2019-11-23 21:09:54,408 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:09:54,408 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:09:54,408 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:09:54,409 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:09:54,409 INFO  L87              Difference]: Start difference. First operand 46566 states and 55163 transitions. Second operand 3 states.
[2019-11-23 21:09:57,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:09:57,639 INFO  L93              Difference]: Finished difference Result 92416 states and 109604 transitions.
[2019-11-23 21:09:57,641 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:09:57,641 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 237
[2019-11-23 21:09:57,641 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:09:57,683 INFO  L225             Difference]: With dead ends: 92416
[2019-11-23 21:09:57,683 INFO  L226             Difference]: Without dead ends: 46566
[2019-11-23 21:09:57,711 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-23 21:09:57,750 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46566 states.
[2019-11-23 21:09:59,843 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46566 to 46566.
[2019-11-23 21:09:59,843 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46566 states.
[2019-11-23 21:09:59,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 53468 transitions.
[2019-11-23 21:09:59,889 INFO  L78                 Accepts]: Start accepts. Automaton has 46566 states and 53468 transitions. Word has length 237
[2019-11-23 21:09:59,889 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:09:59,890 INFO  L462      AbstractCegarLoop]: Abstraction has 46566 states and 53468 transitions.
[2019-11-23 21:09:59,890 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:09:59,890 INFO  L276                IsEmpty]: Start isEmpty. Operand 46566 states and 53468 transitions.
[2019-11-23 21:09:59,894 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 289
[2019-11-23 21:09:59,894 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:09:59,895 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:10:00,098 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:10:00,099 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:10:00,099 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:10:00,100 INFO  L82        PathProgramCache]: Analyzing trace with hash 521193758, now seen corresponding path program 1 times
[2019-11-23 21:10:00,100 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:10:00,101 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334725869]
[2019-11-23 21:10:00,101 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:10:00,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:10:00,530 INFO  L134       CoverageAnalysis]: Checked inductivity of 194 backedges. 6 proven. 187 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-23 21:10:00,530 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334725869]
[2019-11-23 21:10:00,531 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751912776]
[2019-11-23 21:10:00,531 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:10:00,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:10:00,637 INFO  L255         TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:10:00,641 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:10:00,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 194 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2019-11-23 21:10:00,722 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:10:00,723 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9
[2019-11-23 21:10:00,723 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622002276]
[2019-11-23 21:10:00,724 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:10:00,724 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:10:00,724 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:10:00,724 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2019-11-23 21:10:00,724 INFO  L87              Difference]: Start difference. First operand 46566 states and 53468 transitions. Second operand 3 states.
[2019-11-23 21:10:05,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:10:05,625 INFO  L93              Difference]: Finished difference Result 103644 states and 119680 transitions.
[2019-11-23 21:10:05,625 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:10:05,626 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 288
[2019-11-23 21:10:05,626 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:10:05,709 INFO  L225             Difference]: With dead ends: 103644
[2019-11-23 21:10:05,710 INFO  L226             Difference]: Without dead ends: 57831
[2019-11-23 21:10:05,741 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2019-11-23 21:10:05,799 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57831 states.
[2019-11-23 21:10:06,746 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57831 to 57080.
[2019-11-23 21:10:06,746 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 57080 states.
[2019-11-23 21:10:06,840 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 65590 transitions.
[2019-11-23 21:10:06,841 INFO  L78                 Accepts]: Start accepts. Automaton has 57080 states and 65590 transitions. Word has length 288
[2019-11-23 21:10:06,842 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:10:06,842 INFO  L462      AbstractCegarLoop]: Abstraction has 57080 states and 65590 transitions.
[2019-11-23 21:10:06,842 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:10:06,842 INFO  L276                IsEmpty]: Start isEmpty. Operand 57080 states and 65590 transitions.
[2019-11-23 21:10:06,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2019-11-23 21:10:06,853 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:10:06,854 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:10:07,058 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:10:07,058 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:10:07,059 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:10:07,059 INFO  L82        PathProgramCache]: Analyzing trace with hash 38845213, now seen corresponding path program 1 times
[2019-11-23 21:10:07,059 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:10:07,059 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412215675]
[2019-11-23 21:10:07,060 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:10:07,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:10:07,312 INFO  L134       CoverageAnalysis]: Checked inductivity of 225 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2019-11-23 21:10:07,312 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412215675]
[2019-11-23 21:10:07,313 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:10:07,313 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:10:07,313 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596699127]
[2019-11-23 21:10:07,314 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:10:07,314 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:10:07,314 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:10:07,315 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:10:07,315 INFO  L87              Difference]: Start difference. First operand 57080 states and 65590 transitions. Second operand 3 states.
[2019-11-23 21:10:11,541 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:10:11,542 INFO  L93              Difference]: Finished difference Result 113407 states and 130422 transitions.
[2019-11-23 21:10:11,542 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:10:11,542 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 315
[2019-11-23 21:10:11,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:10:11,598 INFO  L225             Difference]: With dead ends: 113407
[2019-11-23 21:10:11,598 INFO  L226             Difference]: Without dead ends: 57080
[2019-11-23 21:10:11,631 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:10:11,675 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57080 states.
[2019-11-23 21:10:12,500 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57080 to 57080.
[2019-11-23 21:10:12,500 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 57080 states.
[2019-11-23 21:10:12,560 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 64196 transitions.
[2019-11-23 21:10:12,560 INFO  L78                 Accepts]: Start accepts. Automaton has 57080 states and 64196 transitions. Word has length 315
[2019-11-23 21:10:12,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:10:12,561 INFO  L462      AbstractCegarLoop]: Abstraction has 57080 states and 64196 transitions.
[2019-11-23 21:10:12,561 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:10:12,561 INFO  L276                IsEmpty]: Start isEmpty. Operand 57080 states and 64196 transitions.
[2019-11-23 21:10:12,599 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 622
[2019-11-23 21:10:12,599 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:10:12,600 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 21:10:12,600 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:10:12,600 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:10:12,601 INFO  L82        PathProgramCache]: Analyzing trace with hash -314164759, now seen corresponding path program 1 times
[2019-11-23 21:10:12,601 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:10:12,601 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309247877]
[2019-11-23 21:10:12,602 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:10:12,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:10:13,199 INFO  L134       CoverageAnalysis]: Checked inductivity of 477 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2019-11-23 21:10:13,200 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309247877]
[2019-11-23 21:10:13,200 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:10:13,200 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:10:13,200 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399170905]
[2019-11-23 21:10:13,201 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:10:13,201 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:10:13,201 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:10:13,202 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:10:13,202 INFO  L87              Difference]: Start difference. First operand 57080 states and 64196 transitions. Second operand 4 states.