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/Problem03_label24.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:55:23,383 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 17:55:23,386 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 17:55:23,478 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
[2019-10-13 17:55:23,498 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 17:55:23,499 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:55:23,501 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:55:23,501 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 17:55:23,502 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 17:55:23,502 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:55:23,502 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 17:55:23,502 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 17:55:23,502 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 17:55:23,503 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 17:55:23,504 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:55:23,504 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:55:23,504 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:55:23,505 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 17:55:23,505 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 17:55:23,505 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 17:55:23,506 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:55:23,506 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:55:23,506 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 17:55:23,506 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 17:55:23,506 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 17:55:23,507 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:55:23,507 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:55:23,507 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:55:23,507 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:55:23,507 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 17:55:23,508 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:55:23,508 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:55:23,508 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:55:23,782 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:55:23,798 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:55:23,801 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:55:23,802 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 17:55:23,803 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 17:55:23,804 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c
[2019-10-13 17:55:23,873 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d97af35/a5f466ee80b440c8846948c5c88bcfa1/FLAG23a503ca9
[2019-10-13 17:55:24,528 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 17:55:24,530 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c
[2019-10-13 17:55:24,550 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d97af35/a5f466ee80b440c8846948c5c88bcfa1/FLAG23a503ca9
[2019-10-13 17:55:24,705 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d97af35/a5f466ee80b440c8846948c5c88bcfa1
[2019-10-13 17:55:24,715 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:55:24,717 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:55:24,718 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:55:24,718 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:55:24,722 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:55:24,723 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:55:24" (1/1) ...
[2019-10-13 17:55:24,725 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c0bab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:24, skipping insertion in model container
[2019-10-13 17:55:24,726 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:55:24" (1/1) ...
[2019-10-13 17:55:24,732 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 17:55:24,807 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:55:25,573 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:55:25,581 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 17:55:25,859 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:55:25,885 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 17:55:25,886 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25 WrapperNode
[2019-10-13 17:55:25,887 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:55:25,888 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:55:25,889 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:55:25,889 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:55:25,908 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (1/1) ...
[2019-10-13 17:55:25,909 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (1/1) ...
[2019-10-13 17:55:25,970 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (1/1) ...
[2019-10-13 17:55:25,970 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (1/1) ...
[2019-10-13 17:55:26,028 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (1/1) ...
[2019-10-13 17:55:26,041 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (1/1) ...
[2019-10-13 17:55:26,062 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (1/1) ...
[2019-10-13 17:55:26,076 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:55:26,076 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:55:26,077 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:55:26,077 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:55:26,078 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (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
[2019-10-13 17:55:26,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:55:26,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:55:26,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 17:55:26,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:55:26,147 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 17:55:26,148 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:55:26,148 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:55:26,149 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 17:55:26,149 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:55:26,149 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:55:26,149 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:55:28,101 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:55:28,102 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 17:55:28,105 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:55:28 BoogieIcfgContainer
[2019-10-13 17:55:28,105 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:55:28,107 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:55:28,107 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:55:28,111 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:55:28,111 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:55:24" (1/3) ...
[2019-10-13 17:55:28,112 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8ef76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:55:28, skipping insertion in model container
[2019-10-13 17:55:28,112 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:55:25" (2/3) ...
[2019-10-13 17:55:28,114 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8ef76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:55:28, skipping insertion in model container
[2019-10-13 17:55:28,114 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:55:28" (3/3) ...
[2019-10-13 17:55:28,124 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem03_label24.c
[2019-10-13 17:55:28,137 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:55:28,152 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:55:28,165 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:55:28,209 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:55:28,209 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 17:55:28,210 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:55:28,211 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:55:28,211 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:55:28,211 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 17:55:28,211 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:55:28,211 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:55:28,252 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states.
[2019-10-13 17:55:28,284 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2019-10-13 17:55:28,284 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:28,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:28,290 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:28,296 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:28,297 INFO  L82        PathProgramCache]: Analyzing trace with hash -1879577704, now seen corresponding path program 1 times
[2019-10-13 17:55:28,307 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:28,307 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965490832]
[2019-10-13 17:55:28,308 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:28,308 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:28,308 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:28,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:29,363 WARN  L191               SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:29,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:29,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:55:29,557 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965490832]
[2019-10-13 17:55:29,558 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:55:29,558 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:55:29,559 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506792589]
[2019-10-13 17:55:29,564 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:55:29,565 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:29,580 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:55:29,581 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:55:29,584 INFO  L87              Difference]: Start difference. First operand 311 states. Second operand 5 states.
[2019-10-13 17:55:29,778 WARN  L191               SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-10-13 17:55:30,319 WARN  L191               SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-10-13 17:55:34,253 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:55:34,254 INFO  L93              Difference]: Finished difference Result 1111 states and 1980 transitions.
[2019-10-13 17:55:34,254 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:55:34,256 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 197
[2019-10-13 17:55:34,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:55:34,294 INFO  L225             Difference]: With dead ends: 1111
[2019-10-13 17:55:34,294 INFO  L226             Difference]: Without dead ends: 703
[2019-10-13 17:55:34,308 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:55:34,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 703 states.
[2019-10-13 17:55:34,413 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 467.
[2019-10-13 17:55:34,415 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 467 states.
[2019-10-13 17:55:34,417 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 718 transitions.
[2019-10-13 17:55:34,419 INFO  L78                 Accepts]: Start accepts. Automaton has 467 states and 718 transitions. Word has length 197
[2019-10-13 17:55:34,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:55:34,421 INFO  L462      AbstractCegarLoop]: Abstraction has 467 states and 718 transitions.
[2019-10-13 17:55:34,421 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:55:34,421 INFO  L276                IsEmpty]: Start isEmpty. Operand 467 states and 718 transitions.
[2019-10-13 17:55:34,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2019-10-13 17:55:34,428 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:34,431 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:34,431 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:34,431 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:34,432 INFO  L82        PathProgramCache]: Analyzing trace with hash 380333484, now seen corresponding path program 1 times
[2019-10-13 17:55:34,432 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:34,432 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927056507]
[2019-10-13 17:55:34,432 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:34,432 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:34,433 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:34,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:34,839 WARN  L191               SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:34,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:34,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:35,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:55:35,031 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927056507]
[2019-10-13 17:55:35,031 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421217199]
[2019-10-13 17:55:35,032 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
[2019-10-13 17:55:35,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:35,243 INFO  L256         TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 17:55:35,268 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:55:35,356 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:55:35,357 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:55:35,357 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2019-10-13 17:55:35,358 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202063023]
[2019-10-13 17:55:35,364 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:55:35,365 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:35,365 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:55:35,366 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:55:35,366 INFO  L87              Difference]: Start difference. First operand 467 states and 718 transitions. Second operand 5 states.
[2019-10-13 17:55:37,094 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:55:37,095 INFO  L93              Difference]: Finished difference Result 1401 states and 2184 transitions.
[2019-10-13 17:55:37,095 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:55:37,095 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 209
[2019-10-13 17:55:37,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:55:37,103 INFO  L225             Difference]: With dead ends: 1401
[2019-10-13 17:55:37,103 INFO  L226             Difference]: Without dead ends: 940
[2019-10-13 17:55:37,106 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2019-10-13 17:55:37,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 940 states.
[2019-10-13 17:55:37,173 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 924.
[2019-10-13 17:55:37,174 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 924 states.
[2019-10-13 17:55:37,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1410 transitions.
[2019-10-13 17:55:37,179 INFO  L78                 Accepts]: Start accepts. Automaton has 924 states and 1410 transitions. Word has length 209
[2019-10-13 17:55:37,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:55:37,181 INFO  L462      AbstractCegarLoop]: Abstraction has 924 states and 1410 transitions.
[2019-10-13 17:55:37,181 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:55:37,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 924 states and 1410 transitions.
[2019-10-13 17:55:37,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2019-10-13 17:55:37,185 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:37,186 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:37,400 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:55:37,401 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:37,401 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:37,402 INFO  L82        PathProgramCache]: Analyzing trace with hash -2072803421, now seen corresponding path program 1 times
[2019-10-13 17:55:37,402 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:37,403 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574545177]
[2019-10-13 17:55:37,403 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:37,403 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:37,404 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:37,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:37,633 WARN  L191               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:37,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:37,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:37,814 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:55:37,816 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574545177]
[2019-10-13 17:55:37,816 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:55:37,819 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 17:55:37,819 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185820428]
[2019-10-13 17:55:37,820 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 17:55:37,820 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:37,821 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 17:55:37,821 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 17:55:37,822 INFO  L87              Difference]: Start difference. First operand 924 states and 1410 transitions. Second operand 9 states.
[2019-10-13 17:55:38,011 WARN  L191               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-10-13 17:55:38,495 WARN  L191               SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-10-13 17:55:38,880 WARN  L191               SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-10-13 17:55:42,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:55:42,530 INFO  L93              Difference]: Finished difference Result 3638 states and 5797 transitions.
[2019-10-13 17:55:42,533 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-13 17:55:42,533 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 210
[2019-10-13 17:55:42,534 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:55:42,555 INFO  L225             Difference]: With dead ends: 3638
[2019-10-13 17:55:42,555 INFO  L226             Difference]: Without dead ends: 2720
[2019-10-13 17:55:42,560 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2019-10-13 17:55:42,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2720 states.
[2019-10-13 17:55:42,673 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2680.
[2019-10-13 17:55:42,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2680 states.
[2019-10-13 17:55:42,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3915 transitions.
[2019-10-13 17:55:42,686 INFO  L78                 Accepts]: Start accepts. Automaton has 2680 states and 3915 transitions. Word has length 210
[2019-10-13 17:55:42,686 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:55:42,686 INFO  L462      AbstractCegarLoop]: Abstraction has 2680 states and 3915 transitions.
[2019-10-13 17:55:42,686 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 17:55:42,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 2680 states and 3915 transitions.
[2019-10-13 17:55:42,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2019-10-13 17:55:42,697 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:42,697 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:42,698 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:42,698 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:42,698 INFO  L82        PathProgramCache]: Analyzing trace with hash -1077912688, now seen corresponding path program 1 times
[2019-10-13 17:55:42,698 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:42,699 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721261426]
[2019-10-13 17:55:42,699 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:42,699 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:42,699 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:42,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:42,987 WARN  L191               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:42,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:43,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:43,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:55:43,145 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721261426]
[2019-10-13 17:55:43,146 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695795276]
[2019-10-13 17:55:43,146 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
[2019-10-13 17:55:43,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:43,383 INFO  L256         TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 17:55:43,404 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:55:43,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:55:43,591 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:55:43,592 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5
[2019-10-13 17:55:43,592 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987218572]
[2019-10-13 17:55:43,593 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:55:43,594 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:43,594 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:55:43,595 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:55:43,595 INFO  L87              Difference]: Start difference. First operand 2680 states and 3915 transitions. Second operand 3 states.
[2019-10-13 17:55:44,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:55:44,704 INFO  L93              Difference]: Finished difference Result 7946 states and 11955 transitions.
[2019-10-13 17:55:44,704 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 17:55:44,704 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 211
[2019-10-13 17:55:44,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:55:44,739 INFO  L225             Difference]: With dead ends: 7946
[2019-10-13 17:55:44,740 INFO  L226             Difference]: Without dead ends: 5272
[2019-10-13 17:55:44,748 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:55:44,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5272 states.
[2019-10-13 17:55:44,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5272 to 5234.
[2019-10-13 17:55:44,898 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5234 states.
[2019-10-13 17:55:44,916 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 7689 transitions.
[2019-10-13 17:55:44,916 INFO  L78                 Accepts]: Start accepts. Automaton has 5234 states and 7689 transitions. Word has length 211
[2019-10-13 17:55:44,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:55:44,918 INFO  L462      AbstractCegarLoop]: Abstraction has 5234 states and 7689 transitions.
[2019-10-13 17:55:44,918 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:55:44,918 INFO  L276                IsEmpty]: Start isEmpty. Operand 5234 states and 7689 transitions.
[2019-10-13 17:55:44,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 236
[2019-10-13 17:55:44,936 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:44,937 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:45,146 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:55:45,147 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:45,148 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:45,148 INFO  L82        PathProgramCache]: Analyzing trace with hash 2120184752, now seen corresponding path program 1 times
[2019-10-13 17:55:45,149 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:45,149 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034377970]
[2019-10-13 17:55:45,149 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:45,150 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:45,150 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:45,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:45,350 WARN  L191               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:45,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:45,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:45,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:45,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 17:55:45,702 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034377970]
[2019-10-13 17:55:45,702 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053411302]
[2019-10-13 17:55:45,702 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
[2019-10-13 17:55:45,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:45,910 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:55:45,917 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:55:46,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-10-13 17:55:46,044 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:55:46,045 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-10-13 17:55:46,045 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360169721]
[2019-10-13 17:55:46,046 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:55:46,046 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:46,046 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:55:46,047 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-10-13 17:55:46,047 INFO  L87              Difference]: Start difference. First operand 5234 states and 7689 transitions. Second operand 3 states.
[2019-10-13 17:55:47,171 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:55:47,171 INFO  L93              Difference]: Finished difference Result 10464 states and 15398 transitions.
[2019-10-13 17:55:47,172 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 17:55:47,172 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 235
[2019-10-13 17:55:47,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:55:47,202 INFO  L225             Difference]: With dead ends: 10464
[2019-10-13 17:55:47,203 INFO  L226             Difference]: Without dead ends: 5236
[2019-10-13 17:55:47,218 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-10-13 17:55:47,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5236 states.
[2019-10-13 17:55:47,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 5234.
[2019-10-13 17:55:47,408 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5234 states.
[2019-10-13 17:55:47,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 7483 transitions.
[2019-10-13 17:55:47,422 INFO  L78                 Accepts]: Start accepts. Automaton has 5234 states and 7483 transitions. Word has length 235
[2019-10-13 17:55:47,423 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:55:47,423 INFO  L462      AbstractCegarLoop]: Abstraction has 5234 states and 7483 transitions.
[2019-10-13 17:55:47,423 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:55:47,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 5234 states and 7483 transitions.
[2019-10-13 17:55:47,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 262
[2019-10-13 17:55:47,454 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:47,454 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:47,659 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:55:47,659 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:47,659 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:47,660 INFO  L82        PathProgramCache]: Analyzing trace with hash -1677850078, now seen corresponding path program 1 times
[2019-10-13 17:55:47,660 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:47,661 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535245009]
[2019-10-13 17:55:47,661 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:47,661 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:47,661 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:47,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:47,974 WARN  L191               SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:47,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:48,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:48,094 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:48,186 INFO  L134       CoverageAnalysis]: Checked inductivity of 77 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 17:55:48,186 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535245009]
[2019-10-13 17:55:48,187 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425374188]
[2019-10-13 17:55:48,187 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
[2019-10-13 17:55:48,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:48,373 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 17:55:48,379 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:55:48,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:55:48,422 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 17:55:48,422 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8
[2019-10-13 17:55:48,422 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063186713]
[2019-10-13 17:55:48,423 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 17:55:48,423 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:48,424 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 17:55:48,424 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:55:48,424 INFO  L87              Difference]: Start difference. First operand 5234 states and 7483 transitions. Second operand 8 states.
[2019-10-13 17:55:48,758 WARN  L191               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-10-13 17:55:49,202 WARN  L191               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-10-13 17:55:53,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:55:53,823 INFO  L93              Difference]: Finished difference Result 13355 states and 20128 transitions.
[2019-10-13 17:55:53,823 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-13 17:55:53,824 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 261
[2019-10-13 17:55:53,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:55:53,869 INFO  L225             Difference]: With dead ends: 13355
[2019-10-13 17:55:53,869 INFO  L226             Difference]: Without dead ends: 8127
[2019-10-13 17:55:53,887 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-13 17:55:53,898 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8127 states.
[2019-10-13 17:55:54,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8127 to 8025.
[2019-10-13 17:55:54,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8025 states.
[2019-10-13 17:55:54,192 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8025 states to 8025 states and 11366 transitions.
[2019-10-13 17:55:54,193 INFO  L78                 Accepts]: Start accepts. Automaton has 8025 states and 11366 transitions. Word has length 261
[2019-10-13 17:55:54,193 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:55:54,193 INFO  L462      AbstractCegarLoop]: Abstraction has 8025 states and 11366 transitions.
[2019-10-13 17:55:54,193 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 17:55:54,194 INFO  L276                IsEmpty]: Start isEmpty. Operand 8025 states and 11366 transitions.
[2019-10-13 17:55:54,225 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 268
[2019-10-13 17:55:54,225 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:54,226 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:54,431 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:55:54,431 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:54,432 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:54,432 INFO  L82        PathProgramCache]: Analyzing trace with hash -584902122, now seen corresponding path program 1 times
[2019-10-13 17:55:54,432 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:54,433 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770230066]
[2019-10-13 17:55:54,433 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:54,433 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:54,434 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:54,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:54,668 WARN  L191               SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:54,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:54,838 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:54,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:54,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 89 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 17:55:54,962 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770230066]
[2019-10-13 17:55:54,962 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473895669]
[2019-10-13 17:55:54,962 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:55:55,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:55,158 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 17:55:55,166 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:55:55,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2019-10-13 17:55:55,236 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:55:55,236 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 17:55:55,237 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803940236]
[2019-10-13 17:55:55,237 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:55:55,237 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:55,238 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:55:55,238 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 17:55:55,239 INFO  L87              Difference]: Start difference. First operand 8025 states and 11366 transitions. Second operand 5 states.
[2019-10-13 17:55:57,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:55:57,100 INFO  L93              Difference]: Finished difference Result 22511 states and 34173 transitions.
[2019-10-13 17:55:57,100 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:55:57,100 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 267
[2019-10-13 17:55:57,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:55:57,171 INFO  L225             Difference]: With dead ends: 22511
[2019-10-13 17:55:57,171 INFO  L226             Difference]: Without dead ends: 14500
[2019-10-13 17:55:57,201 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-13 17:55:57,219 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14500 states.
[2019-10-13 17:55:57,580 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 14334.
[2019-10-13 17:55:57,581 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14334 states.
[2019-10-13 17:55:57,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14334 states to 14334 states and 19354 transitions.
[2019-10-13 17:55:57,625 INFO  L78                 Accepts]: Start accepts. Automaton has 14334 states and 19354 transitions. Word has length 267
[2019-10-13 17:55:57,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:55:57,625 INFO  L462      AbstractCegarLoop]: Abstraction has 14334 states and 19354 transitions.
[2019-10-13 17:55:57,626 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:55:57,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 14334 states and 19354 transitions.
[2019-10-13 17:55:57,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 273
[2019-10-13 17:55:57,682 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:55:57,682 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:55:57,887 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:55:57,887 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:55:57,888 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:55:57,888 INFO  L82        PathProgramCache]: Analyzing trace with hash -264641318, now seen corresponding path program 1 times
[2019-10-13 17:55:57,892 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:55:57,892 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815689510]
[2019-10-13 17:55:57,892 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:57,892 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:55:57,893 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:55:57,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:58,185 WARN  L191               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-10-13 17:55:58,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:58,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:58,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:58,501 INFO  L134       CoverageAnalysis]: Checked inductivity of 99 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 17:55:58,501 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815689510]
[2019-10-13 17:55:58,501 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766774067]
[2019-10-13 17:55:58,502 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:55:58,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:55:58,720 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 8 conjunts are in the unsatisfiable core
[2019-10-13 17:55:58,725 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:55:58,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 99 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2019-10-13 17:55:58,909 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:55:58,909 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16
[2019-10-13 17:55:58,909 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886410821]
[2019-10-13 17:55:58,910 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:55:58,910 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:55:58,910 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:55:58,910 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240
[2019-10-13 17:55:58,911 INFO  L87              Difference]: Start difference. First operand 14334 states and 19354 transitions. Second operand 5 states.