/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/psyco/psyco_net_1.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 22:24:45,546 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-23 22:24:45,605 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 22:24:45,619 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 22:24:45,619 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 22:24:45,621 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 22:24:45,621 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 22:24:45,621 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 22:24:45,621 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 22:24:45,622 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 22:24:45,622 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 22:24:45,622 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 22:24:45,622 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 22:24:45,622 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 22:24:45,622 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 22:24:45,623 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 22:24:45,623 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 22:24:45,623 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 22:24:45,623 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 22:24:45,623 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 22:24:45,624 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 22:24:45,624 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 22:24:45,624 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 22:24:45,624 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 22:24:45,624 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 22:24:45,625 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 22:24:45,625 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 22:24:45,625 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 22:24:45,625 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 22:24:45,625 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 22:24:45,626 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 22:24:45,626 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 22:24:45,626 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 22:24:45,906 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 22:24:45,922 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 22:24:45,925 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 22:24:45,927 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 22:24:45,927 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 22:24:45,928 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_net_1.c
[2019-11-23 22:24:46,000 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa06d914/150dad63385244978d1ef43c138ca23b/FLAG24f47a607
[2019-11-23 22:24:47,095 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 22:24:47,096 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_net_1.c
[2019-11-23 22:24:47,205 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa06d914/150dad63385244978d1ef43c138ca23b/FLAG24f47a607
[2019-11-23 22:24:47,352 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa06d914/150dad63385244978d1ef43c138ca23b
[2019-11-23 22:24:47,363 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 22:24:47,364 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 22:24:47,365 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 22:24:47,366 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 22:24:47,369 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 22:24:47,370 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:24:47" (1/1) ...
[2019-11-23 22:24:47,373 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59120fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:47, skipping insertion in model container
[2019-11-23 22:24:47,373 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:24:47" (1/1) ...
[2019-11-23 22:24:47,381 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 22:24:48,040 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 22:24:50,068 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 22:24:50,079 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 22:24:51,084 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 22:24:51,103 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 22:24:51,104 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51 WrapperNode
[2019-11-23 22:24:51,104 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 22:24:51,105 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 22:24:51,105 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 22:24:51,105 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 22:24:51,115 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:51,377 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:51,892 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 22:24:51,893 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 22:24:51,893 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 22:24:51,893 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 22:24:51,904 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:51,904 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:51,988 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:51,988 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:53,796 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:53,945 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:54,047 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (1/1) ...
[2019-11-23 22:24:54,151 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 22:24:54,151 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 22:24:54,151 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 22:24:54,152 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 22:24:54,152 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (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 22:24:54,210 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 22:24:54,211 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 22:25:15,024 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 22:25:15,024 INFO  L284             CfgBuilder]: Removed 1134 assume(true) statements.
[2019-11-23 22:25:15,029 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:25:15 BoogieIcfgContainer
[2019-11-23 22:25:15,030 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 22:25:15,031 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 22:25:15,031 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 22:25:15,034 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 22:25:15,035 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:24:47" (1/3) ...
[2019-11-23 22:25:15,036 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51662cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:25:15, skipping insertion in model container
[2019-11-23 22:25:15,036 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:24:51" (2/3) ...
[2019-11-23 22:25:15,037 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51662cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:25:15, skipping insertion in model container
[2019-11-23 22:25:15,037 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:25:15" (3/3) ...
[2019-11-23 22:25:15,039 INFO  L109   eAbstractionObserver]: Analyzing ICFG psyco_net_1.c
[2019-11-23 22:25:15,048 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 22:25:15,060 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 22:25:15,071 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 22:25:15,136 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 22:25:15,137 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 22:25:15,137 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 22:25:15,137 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 22:25:15,137 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 22:25:15,137 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 22:25:15,137 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 22:25:15,138 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 22:25:15,247 INFO  L276                IsEmpty]: Start isEmpty. Operand 9211 states.
[2019-11-23 22:25:15,253 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2019-11-23 22:25:15,253 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:15,254 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 22:25:15,255 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:15,261 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:15,261 INFO  L82        PathProgramCache]: Analyzing trace with hash 352619045, now seen corresponding path program 1 times
[2019-11-23 22:25:15,270 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:15,271 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496702035]
[2019-11-23 22:25:15,271 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:15,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:15,521 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 22:25:15,522 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496702035]
[2019-11-23 22:25:15,523 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:15,524 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-23 22:25:15,525 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945843952]
[2019-11-23 22:25:15,530 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-11-23 22:25:15,531 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:15,544 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-11-23 22:25:15,546 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-23 22:25:15,548 INFO  L87              Difference]: Start difference. First operand 9211 states. Second operand 2 states.
[2019-11-23 22:25:15,817 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:15,818 INFO  L93              Difference]: Finished difference Result 17698 states and 35380 transitions.
[2019-11-23 22:25:15,818 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-11-23 22:25:15,820 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 9
[2019-11-23 22:25:15,821 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:15,903 INFO  L225             Difference]: With dead ends: 17698
[2019-11-23 22:25:15,903 INFO  L226             Difference]: Without dead ends: 8280
[2019-11-23 22:25:15,925 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-23 22:25:15,978 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8280 states.
[2019-11-23 22:25:16,186 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8280.
[2019-11-23 22:25:16,188 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8280 states.
[2019-11-23 22:25:16,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8280 states to 8280 states and 12997 transitions.
[2019-11-23 22:25:16,236 INFO  L78                 Accepts]: Start accepts. Automaton has 8280 states and 12997 transitions. Word has length 9
[2019-11-23 22:25:16,236 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:16,237 INFO  L462      AbstractCegarLoop]: Abstraction has 8280 states and 12997 transitions.
[2019-11-23 22:25:16,237 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-11-23 22:25:16,237 INFO  L276                IsEmpty]: Start isEmpty. Operand 8280 states and 12997 transitions.
[2019-11-23 22:25:16,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2019-11-23 22:25:16,238 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:16,238 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 22:25:16,239 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:16,239 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:16,239 INFO  L82        PathProgramCache]: Analyzing trace with hash -1422650027, now seen corresponding path program 1 times
[2019-11-23 22:25:16,240 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:16,240 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14505643]
[2019-11-23 22:25:16,241 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:16,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:16,428 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 22:25:16,429 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14505643]
[2019-11-23 22:25:16,429 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:16,430 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:16,430 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985928803]
[2019-11-23 22:25:16,434 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:16,435 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:16,435 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:16,436 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:16,436 INFO  L87              Difference]: Start difference. First operand 8280 states and 12997 transitions. Second operand 3 states.
[2019-11-23 22:25:19,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:19,646 INFO  L93              Difference]: Finished difference Result 16561 states and 25996 transitions.
[2019-11-23 22:25:19,648 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:19,648 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 10
[2019-11-23 22:25:19,648 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:19,707 INFO  L225             Difference]: With dead ends: 16561
[2019-11-23 22:25:19,707 INFO  L226             Difference]: Without dead ends: 8283
[2019-11-23 22:25:19,721 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:19,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8283 states.
[2019-11-23 22:25:19,973 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 8283.
[2019-11-23 22:25:19,973 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8283 states.
[2019-11-23 22:25:20,015 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 13000 transitions.
[2019-11-23 22:25:20,016 INFO  L78                 Accepts]: Start accepts. Automaton has 8283 states and 13000 transitions. Word has length 10
[2019-11-23 22:25:20,016 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:20,016 INFO  L462      AbstractCegarLoop]: Abstraction has 8283 states and 13000 transitions.
[2019-11-23 22:25:20,017 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:20,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 8283 states and 13000 transitions.
[2019-11-23 22:25:20,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2019-11-23 22:25:20,018 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:20,018 INFO  L410         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 22:25:20,019 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:20,019 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:20,019 INFO  L82        PathProgramCache]: Analyzing trace with hash 658080264, now seen corresponding path program 1 times
[2019-11-23 22:25:20,020 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:20,020 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746224128]
[2019-11-23 22:25:20,020 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:20,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:20,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 22:25:20,195 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746224128]
[2019-11-23 22:25:20,195 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:20,196 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:20,196 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084375876]
[2019-11-23 22:25:20,196 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:20,196 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:20,197 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:20,197 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:20,198 INFO  L87              Difference]: Start difference. First operand 8283 states and 13000 transitions. Second operand 3 states.
[2019-11-23 22:25:22,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:22,803 INFO  L93              Difference]: Finished difference Result 16456 states and 25845 transitions.
[2019-11-23 22:25:22,804 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:22,804 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 15
[2019-11-23 22:25:22,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:22,858 INFO  L225             Difference]: With dead ends: 16456
[2019-11-23 22:25:22,859 INFO  L226             Difference]: Without dead ends: 8176
[2019-11-23 22:25:22,868 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:22,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8176 states.
[2019-11-23 22:25:22,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8176 to 8176.
[2019-11-23 22:25:22,996 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8176 states.
[2019-11-23 22:25:23,019 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12846 transitions.
[2019-11-23 22:25:23,019 INFO  L78                 Accepts]: Start accepts. Automaton has 8176 states and 12846 transitions. Word has length 15
[2019-11-23 22:25:23,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:23,020 INFO  L462      AbstractCegarLoop]: Abstraction has 8176 states and 12846 transitions.
[2019-11-23 22:25:23,020 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:23,020 INFO  L276                IsEmpty]: Start isEmpty. Operand 8176 states and 12846 transitions.
[2019-11-23 22:25:23,021 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-11-23 22:25:23,021 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:23,022 INFO  L410         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 22:25:23,022 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:23,022 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:23,022 INFO  L82        PathProgramCache]: Analyzing trace with hash 505082677, now seen corresponding path program 1 times
[2019-11-23 22:25:23,023 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:23,023 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038555460]
[2019-11-23 22:25:23,023 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:23,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:23,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 22:25:23,134 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038555460]
[2019-11-23 22:25:23,134 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:23,134 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:23,135 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310638384]
[2019-11-23 22:25:23,135 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:23,135 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:23,136 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:23,136 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:23,136 INFO  L87              Difference]: Start difference. First operand 8176 states and 12846 transitions. Second operand 3 states.
[2019-11-23 22:25:27,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:27,471 INFO  L93              Difference]: Finished difference Result 16264 states and 25563 transitions.
[2019-11-23 22:25:27,471 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:27,472 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 19
[2019-11-23 22:25:27,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:27,512 INFO  L225             Difference]: With dead ends: 16264
[2019-11-23 22:25:27,512 INFO  L226             Difference]: Without dead ends: 8056
[2019-11-23 22:25:27,526 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:27,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8056 states.
[2019-11-23 22:25:27,678 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 8056.
[2019-11-23 22:25:27,678 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8056 states.
[2019-11-23 22:25:27,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8056 states to 8056 states and 12226 transitions.
[2019-11-23 22:25:27,695 INFO  L78                 Accepts]: Start accepts. Automaton has 8056 states and 12226 transitions. Word has length 19
[2019-11-23 22:25:27,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:27,695 INFO  L462      AbstractCegarLoop]: Abstraction has 8056 states and 12226 transitions.
[2019-11-23 22:25:27,695 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:27,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 8056 states and 12226 transitions.
[2019-11-23 22:25:27,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2019-11-23 22:25:27,704 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:27,704 INFO  L410         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 22:25:27,705 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:27,705 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:27,705 INFO  L82        PathProgramCache]: Analyzing trace with hash -945434933, now seen corresponding path program 1 times
[2019-11-23 22:25:27,706 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:27,706 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334876072]
[2019-11-23 22:25:27,706 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:27,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:27,805 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 22:25:27,805 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334876072]
[2019-11-23 22:25:27,805 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:27,806 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:27,807 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411647175]
[2019-11-23 22:25:27,807 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:27,807 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:27,808 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:27,808 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:27,808 INFO  L87              Difference]: Start difference. First operand 8056 states and 12226 transitions. Second operand 3 states.
[2019-11-23 22:25:29,672 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:29,672 INFO  L93              Difference]: Finished difference Result 16110 states and 24449 transitions.
[2019-11-23 22:25:29,672 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:29,673 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 22
[2019-11-23 22:25:29,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:29,695 INFO  L225             Difference]: With dead ends: 16110
[2019-11-23 22:25:29,696 INFO  L226             Difference]: Without dead ends: 8062
[2019-11-23 22:25:29,707 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:29,720 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8062 states.
[2019-11-23 22:25:29,812 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8062 to 8060.
[2019-11-23 22:25:29,812 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8060 states.
[2019-11-23 22:25:29,826 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8060 states to 8060 states and 12230 transitions.
[2019-11-23 22:25:29,826 INFO  L78                 Accepts]: Start accepts. Automaton has 8060 states and 12230 transitions. Word has length 22
[2019-11-23 22:25:29,826 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:29,826 INFO  L462      AbstractCegarLoop]: Abstraction has 8060 states and 12230 transitions.
[2019-11-23 22:25:29,827 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:29,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 8060 states and 12230 transitions.
[2019-11-23 22:25:29,827 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2019-11-23 22:25:29,827 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:29,828 INFO  L410         BasicCegarLoop]: trace histogram [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 22:25:29,828 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:29,828 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:29,828 INFO  L82        PathProgramCache]: Analyzing trace with hash -1597993323, now seen corresponding path program 1 times
[2019-11-23 22:25:29,828 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:29,829 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969464110]
[2019-11-23 22:25:29,829 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:29,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:30,063 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 22:25:30,063 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969464110]
[2019-11-23 22:25:30,063 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:30,064 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:30,064 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698912664]
[2019-11-23 22:25:30,064 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:30,064 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:30,065 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:30,065 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:30,065 INFO  L87              Difference]: Start difference. First operand 8060 states and 12230 transitions. Second operand 3 states.
[2019-11-23 22:25:34,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:34,885 INFO  L93              Difference]: Finished difference Result 24164 states and 36672 transitions.
[2019-11-23 22:25:34,885 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:34,885 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 23
[2019-11-23 22:25:34,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:34,916 INFO  L225             Difference]: With dead ends: 24164
[2019-11-23 22:25:34,917 INFO  L226             Difference]: Without dead ends: 16064
[2019-11-23 22:25:34,927 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:34,947 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16064 states.
[2019-11-23 22:25:35,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16064 to 14806.
[2019-11-23 22:25:35,135 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14806 states.
[2019-11-23 22:25:35,165 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14806 states to 14806 states and 23042 transitions.
[2019-11-23 22:25:35,165 INFO  L78                 Accepts]: Start accepts. Automaton has 14806 states and 23042 transitions. Word has length 23
[2019-11-23 22:25:35,166 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:35,167 INFO  L462      AbstractCegarLoop]: Abstraction has 14806 states and 23042 transitions.
[2019-11-23 22:25:35,167 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:35,167 INFO  L276                IsEmpty]: Start isEmpty. Operand 14806 states and 23042 transitions.
[2019-11-23 22:25:35,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2019-11-23 22:25:35,168 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:35,168 INFO  L410         BasicCegarLoop]: trace histogram [2, 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 22:25:35,169 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:35,169 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:35,169 INFO  L82        PathProgramCache]: Analyzing trace with hash -2046252058, now seen corresponding path program 1 times
[2019-11-23 22:25:35,170 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:35,170 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951470308]
[2019-11-23 22:25:35,170 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:35,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:35,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 22:25:35,276 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951470308]
[2019-11-23 22:25:35,276 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:35,276 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:35,277 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082811022]
[2019-11-23 22:25:35,277 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:35,277 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:35,277 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:35,278 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:35,278 INFO  L87              Difference]: Start difference. First operand 14806 states and 23042 transitions. Second operand 3 states.
[2019-11-23 22:25:42,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:42,697 INFO  L93              Difference]: Finished difference Result 37336 states and 57904 transitions.
[2019-11-23 22:25:42,702 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:42,702 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 25
[2019-11-23 22:25:42,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:42,737 INFO  L225             Difference]: With dead ends: 37336
[2019-11-23 22:25:42,738 INFO  L226             Difference]: Without dead ends: 22266
[2019-11-23 22:25:42,756 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:42,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22266 states.
[2019-11-23 22:25:43,041 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22266 to 21072.
[2019-11-23 22:25:43,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21072 states.
[2019-11-23 22:25:43,077 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 32684 transitions.
[2019-11-23 22:25:43,077 INFO  L78                 Accepts]: Start accepts. Automaton has 21072 states and 32684 transitions. Word has length 25
[2019-11-23 22:25:43,078 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:43,078 INFO  L462      AbstractCegarLoop]: Abstraction has 21072 states and 32684 transitions.
[2019-11-23 22:25:43,078 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:43,078 INFO  L276                IsEmpty]: Start isEmpty. Operand 21072 states and 32684 transitions.
[2019-11-23 22:25:43,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2019-11-23 22:25:43,079 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:43,079 INFO  L410         BasicCegarLoop]: trace histogram [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]
[2019-11-23 22:25:43,079 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:43,079 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:43,079 INFO  L82        PathProgramCache]: Analyzing trace with hash -1701022621, now seen corresponding path program 1 times
[2019-11-23 22:25:43,080 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:43,080 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443494533]
[2019-11-23 22:25:43,080 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:43,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:43,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 22:25:43,347 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443494533]
[2019-11-23 22:25:43,348 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:43,348 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:43,349 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008699372]
[2019-11-23 22:25:43,349 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:43,349 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:43,349 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:43,350 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:43,350 INFO  L87              Difference]: Start difference. First operand 21072 states and 32684 transitions. Second operand 3 states.
[2019-11-23 22:25:51,455 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:51,456 INFO  L93              Difference]: Finished difference Result 63170 states and 97974 transitions.
[2019-11-23 22:25:51,456 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:51,456 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 30
[2019-11-23 22:25:51,456 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:51,557 INFO  L225             Difference]: With dead ends: 63170
[2019-11-23 22:25:51,557 INFO  L226             Difference]: Without dead ends: 42106
[2019-11-23 22:25:51,579 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:51,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42106 states.
[2019-11-23 22:25:52,112 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42106 to 40080.
[2019-11-23 22:25:52,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40080 states.
[2019-11-23 22:25:52,166 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40080 states to 40080 states and 63058 transitions.
[2019-11-23 22:25:52,166 INFO  L78                 Accepts]: Start accepts. Automaton has 40080 states and 63058 transitions. Word has length 30
[2019-11-23 22:25:52,166 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:52,167 INFO  L462      AbstractCegarLoop]: Abstraction has 40080 states and 63058 transitions.
[2019-11-23 22:25:52,167 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:52,167 INFO  L276                IsEmpty]: Start isEmpty. Operand 40080 states and 63058 transitions.
[2019-11-23 22:25:52,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2019-11-23 22:25:52,168 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:52,168 INFO  L410         BasicCegarLoop]: trace histogram [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 22:25:52,168 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:52,169 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:52,169 INFO  L82        PathProgramCache]: Analyzing trace with hash -421428809, now seen corresponding path program 1 times
[2019-11-23 22:25:52,169 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:52,169 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389014359]
[2019-11-23 22:25:52,169 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:52,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:52,253 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 22:25:52,253 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389014359]
[2019-11-23 22:25:52,253 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:52,254 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:52,254 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885315661]
[2019-11-23 22:25:52,254 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:52,254 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:52,255 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:52,255 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:52,255 INFO  L87              Difference]: Start difference. First operand 40080 states and 63058 transitions. Second operand 3 states.
[2019-11-23 22:25:57,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 22:25:57,192 INFO  L93              Difference]: Finished difference Result 107942 states and 170044 transitions.
[2019-11-23 22:25:57,193 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 22:25:57,193 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 39
[2019-11-23 22:25:57,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 22:25:57,286 INFO  L225             Difference]: With dead ends: 107942
[2019-11-23 22:25:57,287 INFO  L226             Difference]: Without dead ends: 67822
[2019-11-23 22:25:57,326 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 22:25:57,400 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67822 states.
[2019-11-23 22:25:58,515 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67822 to 66148.
[2019-11-23 22:25:58,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66148 states.
[2019-11-23 22:25:58,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66148 states to 66148 states and 104778 transitions.
[2019-11-23 22:25:58,640 INFO  L78                 Accepts]: Start accepts. Automaton has 66148 states and 104778 transitions. Word has length 39
[2019-11-23 22:25:58,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 22:25:58,641 INFO  L462      AbstractCegarLoop]: Abstraction has 66148 states and 104778 transitions.
[2019-11-23 22:25:58,641 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 22:25:58,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 66148 states and 104778 transitions.
[2019-11-23 22:25:58,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2019-11-23 22:25:58,644 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 22:25:58,644 INFO  L410         BasicCegarLoop]: trace histogram [3, 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]
[2019-11-23 22:25:58,645 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 22:25:58,645 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 22:25:58,645 INFO  L82        PathProgramCache]: Analyzing trace with hash -1116669619, now seen corresponding path program 1 times
[2019-11-23 22:25:58,645 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 22:25:58,646 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719617822]
[2019-11-23 22:25:58,646 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 22:25:58,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 22:25:58,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-11-23 22:25:58,740 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719617822]
[2019-11-23 22:25:58,740 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 22:25:58,740 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 22:25:58,741 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062571818]
[2019-11-23 22:25:58,741 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 22:25:58,741 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 22:25:58,741 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 22:25:58,742 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 22:25:58,742 INFO  L87              Difference]: Start difference. First operand 66148 states and 104778 transitions. Second operand 3 states.