java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label11.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:03:50,716 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 22:03:50,772 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
[2019-10-14 22:03:50,793 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:03:50,793 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:03:50,795 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:03:50,796 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:03:50,796 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:03:50,796 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:03:50,796 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:03:50,797 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:03:50,797 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:03:50,797 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:03:50,798 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:03:50,798 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:03:50,798 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:03:50,799 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:03:50,799 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:03:50,799 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:03:50,799 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:03:50,800 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:03:50,800 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:03:50,800 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:03:50,800 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:03:50,801 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:03:50,801 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:03:50,801 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:03:50,801 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:03:50,802 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:03:50,802 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:03:50,802 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:03:50,802 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:03:51,051 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:03:51,065 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:03:51,069 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:03:51,070 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:03:51,071 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:03:51,071 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label11.c
[2019-10-14 22:03:51,158 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6560c099/35f11af7298e491ba77afe941f3b82de/FLAG5426c0f41
[2019-10-14 22:03:51,783 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:03:51,784 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label11.c
[2019-10-14 22:03:51,811 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6560c099/35f11af7298e491ba77afe941f3b82de/FLAG5426c0f41
[2019-10-14 22:03:51,982 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6560c099/35f11af7298e491ba77afe941f3b82de
[2019-10-14 22:03:51,993 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:03:51,997 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:03:51,998 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:03:51,999 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:03:52,003 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:03:52,004 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:51" (1/1) ...
[2019-10-14 22:03:52,007 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ba2c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:52, skipping insertion in model container
[2019-10-14 22:03:52,008 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:51" (1/1) ...
[2019-10-14 22:03:52,016 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:03:52,099 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:03:52,867 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:03:52,879 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:03:53,232 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:03:53,254 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:03:53,255 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53 WrapperNode
[2019-10-14 22:03:53,255 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:03:53,256 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:03:53,256 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:03:53,257 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:03:53,271 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,271 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,299 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,299 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,369 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,387 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,409 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,424 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:03:53,425 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:03:53,425 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:03:53,425 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:03:53,426 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (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
[2019-10-14 22:03:53,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:03:53,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:03:53,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:03:53,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:03:53,492 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:03:53,493 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:03:53,493 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:03:53,493 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:03:53,493 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:03:53,494 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:03:53,494 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:03:53,494 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:03:53,495 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:03:55,734 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:03:55,735 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:03:55,739 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:55 BoogieIcfgContainer
[2019-10-14 22:03:55,739 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:03:55,740 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:03:55,741 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:03:55,744 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:03:55,744 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:51" (1/3) ...
[2019-10-14 22:03:55,745 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ec57a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:55, skipping insertion in model container
[2019-10-14 22:03:55,745 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53" (2/3) ...
[2019-10-14 22:03:55,746 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ec57a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:55, skipping insertion in model container
[2019-10-14 22:03:55,746 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:55" (3/3) ...
[2019-10-14 22:03:55,749 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem16_label11.c
[2019-10-14 22:03:55,759 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:03:55,770 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:03:55,781 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:03:55,836 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:03:55,836 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:03:55,836 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:03:55,836 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:03:55,836 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:03:55,837 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:03:55,837 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:03:55,837 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:03:55,880 INFO  L276                IsEmpty]: Start isEmpty. Operand 409 states.
[2019-10-14 22:03:55,890 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2019-10-14 22:03:55,890 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:03:55,891 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:03:55,893 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:03:55,899 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:03:55,899 INFO  L82        PathProgramCache]: Analyzing trace with hash -1003051062, now seen corresponding path program 1 times
[2019-10-14 22:03:55,907 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:03:55,908 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065878767]
[2019-10-14 22:03:55,908 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:55,908 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:55,909 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:03:56,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:56,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:56,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:03:56,275 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065878767]
[2019-10-14 22:03:56,276 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:03:56,276 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:03:56,277 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219315578]
[2019-10-14 22:03:56,282 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:03:56,282 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:03:56,296 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:03:56,297 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:03:56,299 INFO  L87              Difference]: Start difference. First operand 409 states. Second operand 5 states.
[2019-10-14 22:04:01,449 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:01,449 INFO  L93              Difference]: Finished difference Result 1515 states and 2850 transitions.
[2019-10-14 22:04:01,450 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 22:04:01,451 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 61
[2019-10-14 22:04:01,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:01,486 INFO  L225             Difference]: With dead ends: 1515
[2019-10-14 22:04:01,486 INFO  L226             Difference]: Without dead ends: 1038
[2019-10-14 22:04:01,499 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:04:01,518 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1038 states.
[2019-10-14 22:04:01,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031.
[2019-10-14 22:04:01,607 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1031 states.
[2019-10-14 22:04:01,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1619 transitions.
[2019-10-14 22:04:01,615 INFO  L78                 Accepts]: Start accepts. Automaton has 1031 states and 1619 transitions. Word has length 61
[2019-10-14 22:04:01,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:01,616 INFO  L462      AbstractCegarLoop]: Abstraction has 1031 states and 1619 transitions.
[2019-10-14 22:04:01,616 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:04:01,616 INFO  L276                IsEmpty]: Start isEmpty. Operand 1031 states and 1619 transitions.
[2019-10-14 22:04:01,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2019-10-14 22:04:01,629 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:01,632 INFO  L380         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:01,632 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:01,633 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:01,633 INFO  L82        PathProgramCache]: Analyzing trace with hash 1732161147, now seen corresponding path program 1 times
[2019-10-14 22:04:01,633 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:01,633 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532324336]
[2019-10-14 22:04:01,634 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:01,634 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:01,634 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:01,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:01,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:01,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:02,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:04:02,193 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532324336]
[2019-10-14 22:04:02,194 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:04:02,194 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-14 22:04:02,194 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004021993]
[2019-10-14 22:04:02,201 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 22:04:02,202 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:02,202 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 22:04:02,202 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-14 22:04:02,203 INFO  L87              Difference]: Start difference. First operand 1031 states and 1619 transitions. Second operand 9 states.
[2019-10-14 22:04:06,195 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:06,196 INFO  L93              Difference]: Finished difference Result 3125 states and 5015 transitions.
[2019-10-14 22:04:06,196 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-14 22:04:06,197 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 196
[2019-10-14 22:04:06,198 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:06,218 INFO  L225             Difference]: With dead ends: 3125
[2019-10-14 22:04:06,218 INFO  L226             Difference]: Without dead ends: 2100
[2019-10-14 22:04:06,223 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-10-14 22:04:06,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2100 states.
[2019-10-14 22:04:06,323 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2069.
[2019-10-14 22:04:06,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2069 states.
[2019-10-14 22:04:06,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3146 transitions.
[2019-10-14 22:04:06,334 INFO  L78                 Accepts]: Start accepts. Automaton has 2069 states and 3146 transitions. Word has length 196
[2019-10-14 22:04:06,337 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:06,337 INFO  L462      AbstractCegarLoop]: Abstraction has 2069 states and 3146 transitions.
[2019-10-14 22:04:06,338 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 22:04:06,338 INFO  L276                IsEmpty]: Start isEmpty. Operand 2069 states and 3146 transitions.
[2019-10-14 22:04:06,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2019-10-14 22:04:06,350 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:06,351 INFO  L380         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:06,351 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:06,352 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:06,353 INFO  L82        PathProgramCache]: Analyzing trace with hash -801492122, now seen corresponding path program 1 times
[2019-10-14 22:04:06,353 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:06,353 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971937663]
[2019-10-14 22:04:06,353 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:06,353 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:06,354 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:06,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:06,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:06,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:06,628 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:06,721 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 22:04:06,722 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971937663]
[2019-10-14 22:04:06,722 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370699032]
[2019-10-14 22:04:06,722 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
[2019-10-14 22:04:06,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:06,817 INFO  L256         TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 22:04:06,829 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:06,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2019-10-14 22:04:06,998 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 22:04:06,998 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-14 22:04:07,007 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9086361]
[2019-10-14 22:04:07,009 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:04:07,009 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:07,009 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:04:07,009 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:04:07,010 INFO  L87              Difference]: Start difference. First operand 2069 states and 3146 transitions. Second operand 5 states.
[2019-10-14 22:04:09,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:09,432 INFO  L93              Difference]: Finished difference Result 5192 states and 7967 transitions.
[2019-10-14 22:04:09,437 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-14 22:04:09,437 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 231
[2019-10-14 22:04:09,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:09,458 INFO  L225             Difference]: With dead ends: 5192
[2019-10-14 22:04:09,458 INFO  L226             Difference]: Without dead ends: 3129
[2019-10-14 22:04:09,464 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:04:09,468 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3129 states.
[2019-10-14 22:04:09,548 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3097.
[2019-10-14 22:04:09,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3097 states.
[2019-10-14 22:04:09,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3988 transitions.
[2019-10-14 22:04:09,561 INFO  L78                 Accepts]: Start accepts. Automaton has 3097 states and 3988 transitions. Word has length 231
[2019-10-14 22:04:09,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:09,562 INFO  L462      AbstractCegarLoop]: Abstraction has 3097 states and 3988 transitions.
[2019-10-14 22:04:09,562 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:04:09,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 3097 states and 3988 transitions.
[2019-10-14 22:04:09,569 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 341
[2019-10-14 22:04:09,570 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:09,570 INFO  L380         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, 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]
[2019-10-14 22:04:09,774 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:09,774 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:09,775 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:09,775 INFO  L82        PathProgramCache]: Analyzing trace with hash -318977725, now seen corresponding path program 1 times
[2019-10-14 22:04:09,775 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:09,776 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28148433]
[2019-10-14 22:04:09,776 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:09,777 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:09,777 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:09,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:09,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:09,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:09,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:10,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:10,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 397 backedges. 235 proven. 71 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2019-10-14 22:04:10,174 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28148433]
[2019-10-14 22:04:10,174 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819429984]
[2019-10-14 22:04:10,174 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
[2019-10-14 22:04:10,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:10,293 INFO  L256         TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:04:10,315 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:10,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 397 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2019-10-14 22:04:10,600 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:04:10,600 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-14 22:04:10,601 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347027565]
[2019-10-14 22:04:10,603 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-14 22:04:10,603 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:10,603 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-14 22:04:10,604 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:04:10,604 INFO  L87              Difference]: Start difference. First operand 3097 states and 3988 transitions. Second operand 11 states.
[2019-10-14 22:04:18,509 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:18,509 INFO  L93              Difference]: Finished difference Result 10419 states and 14042 transitions.
[2019-10-14 22:04:18,509 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2019-10-14 22:04:18,510 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 340
[2019-10-14 22:04:18,510 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:18,543 INFO  L225             Difference]: With dead ends: 10419
[2019-10-14 22:04:18,544 INFO  L226             Difference]: Without dead ends: 6317
[2019-10-14 22:04:18,553 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420
[2019-10-14 22:04:18,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6317 states.
[2019-10-14 22:04:18,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5938.
[2019-10-14 22:04:18,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5938 states.
[2019-10-14 22:04:18,706 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 7569 transitions.
[2019-10-14 22:04:18,707 INFO  L78                 Accepts]: Start accepts. Automaton has 5938 states and 7569 transitions. Word has length 340
[2019-10-14 22:04:18,708 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:18,708 INFO  L462      AbstractCegarLoop]: Abstraction has 5938 states and 7569 transitions.
[2019-10-14 22:04:18,708 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-14 22:04:18,708 INFO  L276                IsEmpty]: Start isEmpty. Operand 5938 states and 7569 transitions.
[2019-10-14 22:04:18,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 378
[2019-10-14 22:04:18,718 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:18,719 INFO  L380         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, 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]
[2019-10-14 22:04:18,925 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:18,926 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:18,926 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:18,927 INFO  L82        PathProgramCache]: Analyzing trace with hash 1913009258, now seen corresponding path program 1 times
[2019-10-14 22:04:18,927 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:18,927 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217658074]
[2019-10-14 22:04:18,927 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:18,927 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:18,927 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:18,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:19,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:19,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:19,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:19,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:19,427 INFO  L134       CoverageAnalysis]: Checked inductivity of 419 backedges. 243 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2019-10-14 22:04:19,428 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217658074]
[2019-10-14 22:04:19,428 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677393416]
[2019-10-14 22:04:19,428 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
[2019-10-14 22:04:19,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:19,556 INFO  L256         TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:04:19,562 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:19,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 419 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2019-10-14 22:04:19,776 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:04:19,777 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11
[2019-10-14 22:04:19,777 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36930669]
[2019-10-14 22:04:19,778 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-14 22:04:19,778 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:19,779 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-14 22:04:19,779 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:04:19,779 INFO  L87              Difference]: Start difference. First operand 5938 states and 7569 transitions. Second operand 11 states.
[2019-10-14 22:04:23,861 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:23,862 INFO  L93              Difference]: Finished difference Result 13329 states and 17713 transitions.
[2019-10-14 22:04:23,862 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-14 22:04:23,862 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 377
[2019-10-14 22:04:23,863 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:23,899 INFO  L225             Difference]: With dead ends: 13329
[2019-10-14 22:04:23,900 INFO  L226             Difference]: Without dead ends: 7352
[2019-10-14 22:04:23,924 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2019-10-14 22:04:23,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7352 states.
[2019-10-14 22:04:24,083 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7310.
[2019-10-14 22:04:24,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7310 states.
[2019-10-14 22:04:24,099 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 8304 transitions.
[2019-10-14 22:04:24,099 INFO  L78                 Accepts]: Start accepts. Automaton has 7310 states and 8304 transitions. Word has length 377
[2019-10-14 22:04:24,100 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:24,100 INFO  L462      AbstractCegarLoop]: Abstraction has 7310 states and 8304 transitions.
[2019-10-14 22:04:24,100 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-14 22:04:24,100 INFO  L276                IsEmpty]: Start isEmpty. Operand 7310 states and 8304 transitions.
[2019-10-14 22:04:24,116 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 548
[2019-10-14 22:04:24,116 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:24,116 INFO  L380         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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]
[2019-10-14 22:04:24,330 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:24,331 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:24,331 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:24,331 INFO  L82        PathProgramCache]: Analyzing trace with hash -857763430, now seen corresponding path program 1 times
[2019-10-14 22:04:24,331 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:24,332 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21988070]
[2019-10-14 22:04:24,332 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:24,332 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:24,332 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:24,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:24,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:24,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:24,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:24,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:24,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:25,423 INFO  L134       CoverageAnalysis]: Checked inductivity of 875 backedges. 321 proven. 240 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked.
[2019-10-14 22:04:25,423 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21988070]
[2019-10-14 22:04:25,423 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250949233]
[2019-10-14 22:04:25,424 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
[2019-10-14 22:04:25,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:25,578 INFO  L256         TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:04:25,586 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:25,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 875 backedges. 721 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked.
[2019-10-14 22:04:25,868 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:04:25,868 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-10-14 22:04:25,868 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130742477]
[2019-10-14 22:04:25,870 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-14 22:04:25,870 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:25,870 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-14 22:04:25,871 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:04:25,871 INFO  L87              Difference]: Start difference. First operand 7310 states and 8304 transitions. Second operand 12 states.