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_label07.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:04:45,030 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 18:04:45,032 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 18:04:45,097 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 18:04:45,115 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:04:45,115 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:04:45,117 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:04:45,117 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:04:45,117 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:04:45,118 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:04:45,118 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:04:45,118 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:04:45,118 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:04:45,118 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:04:45,119 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:04:45,119 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:04:45,120 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:04:45,120 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:04:45,120 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:04:45,121 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:04:45,121 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:04:45,121 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:04:45,121 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:04:45,121 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:04:45,122 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:04:45,122 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:04:45,122 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:04:45,122 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:04:45,122 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:04:45,123 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:04:45,123 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:04:45,123 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:04:45,123 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:04:45,412 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:04:45,433 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:04:45,437 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:04:45,438 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:04:45,438 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:04:45,439 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label07.c
[2019-10-13 18:04:45,508 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f62f37f/7ddf413da5574a28a07e6a48324201ca/FLAGf8055bbf5
[2019-10-13 18:04:46,203 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:04:46,204 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label07.c
[2019-10-13 18:04:46,220 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f62f37f/7ddf413da5574a28a07e6a48324201ca/FLAGf8055bbf5
[2019-10-13 18:04:46,367 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f62f37f/7ddf413da5574a28a07e6a48324201ca
[2019-10-13 18:04:46,376 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:04:46,377 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:04:46,378 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:04:46,378 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:04:46,381 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:04:46,382 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:46" (1/1) ...
[2019-10-13 18:04:46,385 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:46, skipping insertion in model container
[2019-10-13 18:04:46,385 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:46" (1/1) ...
[2019-10-13 18:04:46,393 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:04:46,459 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:04:47,270 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:04:47,280 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:04:47,578 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:04:47,596 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:04:47,597 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47 WrapperNode
[2019-10-13 18:04:47,597 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:04:47,598 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:04:47,598 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:04:47,598 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:04:47,612 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (1/1) ...
[2019-10-13 18:04:47,613 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (1/1) ...
[2019-10-13 18:04:47,640 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (1/1) ...
[2019-10-13 18:04:47,640 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (1/1) ...
[2019-10-13 18:04:47,709 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (1/1) ...
[2019-10-13 18:04:47,741 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (1/1) ...
[2019-10-13 18:04:47,759 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (1/1) ...
[2019-10-13 18:04:47,775 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:04:47,776 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:04:47,776 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:04:47,776 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:04:47,777 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (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 18:04:47,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:04:47,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:04:47,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:04:47,846 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-13 18:04:47,846 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:04:47,846 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:04:47,846 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-13 18:04:47,846 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:04:47,846 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:04:47,847 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:04:47,847 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:04:47,847 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:04:47,847 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:04:50,199 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:04:50,200 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:04:50,203 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:50 BoogieIcfgContainer
[2019-10-13 18:04:50,204 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:04:50,206 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:04:50,206 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:04:50,209 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:04:50,210 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:46" (1/3) ...
[2019-10-13 18:04:50,212 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e77ba24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:50, skipping insertion in model container
[2019-10-13 18:04:50,212 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:47" (2/3) ...
[2019-10-13 18:04:50,213 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e77ba24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:50, skipping insertion in model container
[2019-10-13 18:04:50,213 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:50" (3/3) ...
[2019-10-13 18:04:50,216 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem16_label07.c
[2019-10-13 18:04:50,225 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:04:50,234 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:04:50,246 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:04:50,291 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:04:50,291 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:04:50,292 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:04:50,292 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:04:50,292 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:04:50,292 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:04:50,292 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:04:50,292 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:04:50,331 INFO  L276                IsEmpty]: Start isEmpty. Operand 409 states.
[2019-10-13 18:04:50,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2019-10-13 18:04:50,344 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:04:50,345 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]
[2019-10-13 18:04:50,347 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:04:50,353 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:04:50,353 INFO  L82        PathProgramCache]: Analyzing trace with hash -586545963, now seen corresponding path program 1 times
[2019-10-13 18:04:50,363 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:04:50,363 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487876819]
[2019-10-13 18:04:50,364 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:04:50,364 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:04:50,365 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:04:50,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:50,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:50,854 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 18:04:50,855 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487876819]
[2019-10-13 18:04:50,856 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:04:50,856 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:04:50,857 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141978400]
[2019-10-13 18:04:50,863 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:04:50,864 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:04:50,882 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:04:50,883 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:04:50,887 INFO  L87              Difference]: Start difference. First operand 409 states. Second operand 5 states.
[2019-10-13 18:04:55,936 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:04:55,937 INFO  L93              Difference]: Finished difference Result 1515 states and 2847 transitions.
[2019-10-13 18:04:55,938 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:04:55,940 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 60
[2019-10-13 18:04:55,941 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:04:55,981 INFO  L225             Difference]: With dead ends: 1515
[2019-10-13 18:04:55,981 INFO  L226             Difference]: Without dead ends: 1038
[2019-10-13 18:04:55,995 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
[2019-10-13 18:04:56,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1038 states.
[2019-10-13 18:04:56,116 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031.
[2019-10-13 18:04:56,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1031 states.
[2019-10-13 18:04:56,124 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1629 transitions.
[2019-10-13 18:04:56,126 INFO  L78                 Accepts]: Start accepts. Automaton has 1031 states and 1629 transitions. Word has length 60
[2019-10-13 18:04:56,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:04:56,127 INFO  L462      AbstractCegarLoop]: Abstraction has 1031 states and 1629 transitions.
[2019-10-13 18:04:56,127 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:04:56,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 1031 states and 1629 transitions.
[2019-10-13 18:04:56,134 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2019-10-13 18:04:56,135 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:04:56,135 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, 1, 1, 1, 1, 1, 1, 1, 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 18:04:56,135 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:04:56,136 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:04:56,136 INFO  L82        PathProgramCache]: Analyzing trace with hash -1735550147, now seen corresponding path program 1 times
[2019-10-13 18:04:56,136 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:04:56,136 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118736401]
[2019-10-13 18:04:56,137 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:04:56,137 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:04:56,137 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:04:56,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:56,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:56,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:56,579 INFO  L134       CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:04:56,580 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118736401]
[2019-10-13 18:04:56,580 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:04:56,580 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 18:04:56,580 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441884549]
[2019-10-13 18:04:56,583 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 18:04:56,583 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:04:56,583 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 18:04:56,584 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 18:04:56,584 INFO  L87              Difference]: Start difference. First operand 1031 states and 1629 transitions. Second operand 8 states.
[2019-10-13 18:05:04,576 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:04,576 INFO  L93              Difference]: Finished difference Result 3898 states and 6463 transitions.
[2019-10-13 18:05:04,576 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-13 18:05:04,577 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 135
[2019-10-13 18:05:04,577 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:04,601 INFO  L225             Difference]: With dead ends: 3898
[2019-10-13 18:05:04,601 INFO  L226             Difference]: Without dead ends: 2873
[2019-10-13 18:05:04,606 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:05:04,610 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2873 states.
[2019-10-13 18:05:04,704 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2811.
[2019-10-13 18:05:04,705 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2811 states.
[2019-10-13 18:05:04,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4308 transitions.
[2019-10-13 18:05:04,720 INFO  L78                 Accepts]: Start accepts. Automaton has 2811 states and 4308 transitions. Word has length 135
[2019-10-13 18:05:04,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:04,721 INFO  L462      AbstractCegarLoop]: Abstraction has 2811 states and 4308 transitions.
[2019-10-13 18:05:04,721 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 18:05:04,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 2811 states and 4308 transitions.
[2019-10-13 18:05:04,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2019-10-13 18:05:04,726 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:04,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:04,727 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:04,727 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:04,727 INFO  L82        PathProgramCache]: Analyzing trace with hash -98267403, now seen corresponding path program 1 times
[2019-10-13 18:05:04,727 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:04,728 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266706297]
[2019-10-13 18:05:04,728 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:04,728 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:04,728 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:04,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:04,855 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:04,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:05,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:05:05,027 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266706297]
[2019-10-13 18:05:05,028 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:05:05,028 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 18:05:05,028 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722065344]
[2019-10-13 18:05:05,029 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:05:05,029 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:05,029 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:05:05,030 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:05:05,030 INFO  L87              Difference]: Start difference. First operand 2811 states and 4308 transitions. Second operand 9 states.
[2019-10-13 18:05:10,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:10,795 INFO  L93              Difference]: Finished difference Result 9864 states and 15975 transitions.
[2019-10-13 18:05:10,796 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-13 18:05:10,796 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 139
[2019-10-13 18:05:10,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:10,839 INFO  L225             Difference]: With dead ends: 9864
[2019-10-13 18:05:10,839 INFO  L226             Difference]: Without dead ends: 7059
[2019-10-13 18:05:10,850 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2019-10-13 18:05:10,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7059 states.
[2019-10-13 18:05:11,057 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7059 to 7025.
[2019-10-13 18:05:11,058 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7025 states.
[2019-10-13 18:05:11,098 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 10407 transitions.
[2019-10-13 18:05:11,099 INFO  L78                 Accepts]: Start accepts. Automaton has 7025 states and 10407 transitions. Word has length 139
[2019-10-13 18:05:11,099 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:11,100 INFO  L462      AbstractCegarLoop]: Abstraction has 7025 states and 10407 transitions.
[2019-10-13 18:05:11,101 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:05:11,101 INFO  L276                IsEmpty]: Start isEmpty. Operand 7025 states and 10407 transitions.
[2019-10-13 18:05:11,119 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 235
[2019-10-13 18:05:11,119 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:11,120 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, 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]
[2019-10-13 18:05:11,120 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:11,120 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:11,121 INFO  L82        PathProgramCache]: Analyzing trace with hash 396142693, now seen corresponding path program 1 times
[2019-10-13 18:05:11,121 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:11,121 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254118592]
[2019-10-13 18:05:11,121 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:11,122 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:11,123 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:11,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:11,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:11,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:11,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:11,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 189 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-13 18:05:11,574 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254118592]
[2019-10-13 18:05:11,575 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038097999]
[2019-10-13 18:05:11,575 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 18:05:11,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:11,677 INFO  L256         TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:05:11,688 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:05:11,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:05:11,803 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:05:11,803 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11
[2019-10-13 18:05:11,803 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813341550]
[2019-10-13 18:05:11,804 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 18:05:11,805 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:11,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 18:05:11,805 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:05:11,805 INFO  L87              Difference]: Start difference. First operand 7025 states and 10407 transitions. Second operand 11 states.
[2019-10-13 18:05:16,381 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:16,381 INFO  L93              Difference]: Finished difference Result 17510 states and 26759 transitions.
[2019-10-13 18:05:16,382 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-13 18:05:16,382 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 234
[2019-10-13 18:05:16,383 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:16,438 INFO  L225             Difference]: With dead ends: 17510
[2019-10-13 18:05:16,438 INFO  L226             Difference]: Without dead ends: 10491
[2019-10-13 18:05:16,459 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 236 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2019-10-13 18:05:16,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10491 states.
[2019-10-13 18:05:16,704 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10491 to 8063.
[2019-10-13 18:05:16,704 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8063 states.
[2019-10-13 18:05:16,724 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8063 states to 8063 states and 11784 transitions.
[2019-10-13 18:05:16,726 INFO  L78                 Accepts]: Start accepts. Automaton has 8063 states and 11784 transitions. Word has length 234
[2019-10-13 18:05:16,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:16,727 INFO  L462      AbstractCegarLoop]: Abstraction has 8063 states and 11784 transitions.
[2019-10-13 18:05:16,728 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-13 18:05:16,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 8063 states and 11784 transitions.
[2019-10-13 18:05:16,737 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 311
[2019-10-13 18:05:16,738 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:16,738 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:05:16,942 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:16,943 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:16,943 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:16,943 INFO  L82        PathProgramCache]: Analyzing trace with hash 1136292925, now seen corresponding path program 1 times
[2019-10-13 18:05:16,943 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:16,944 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903991932]
[2019-10-13 18:05:16,944 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:16,944 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:16,944 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:17,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:17,094 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:17,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:17,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:17,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 221 backedges. 106 proven. 110 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 18:05:17,422 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903991932]
[2019-10-13 18:05:17,422 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288934269]
[2019-10-13 18:05:17,422 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 18:05:17,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:17,566 INFO  L256         TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:05:17,595 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:05:17,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 221 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked.
[2019-10-13 18:05:17,850 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:05:17,851 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 18:05:17,851 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660267009]
[2019-10-13 18:05:17,852 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:05:17,853 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:17,853 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:05:17,853 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:05:17,854 INFO  L87              Difference]: Start difference. First operand 8063 states and 11784 transitions. Second operand 5 states.
[2019-10-13 18:05:20,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:20,731 INFO  L93              Difference]: Finished difference Result 18225 states and 26754 transitions.
[2019-10-13 18:05:20,731 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-13 18:05:20,731 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 310
[2019-10-13 18:05:20,732 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:20,810 INFO  L225             Difference]: With dead ends: 18225
[2019-10-13 18:05:20,810 INFO  L226             Difference]: Without dead ends: 10168
[2019-10-13 18:05:20,843 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:05:20,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10168 states.
[2019-10-13 18:05:21,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 9101.
[2019-10-13 18:05:21,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9101 states.
[2019-10-13 18:05:21,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9101 states to 9101 states and 12176 transitions.
[2019-10-13 18:05:21,187 INFO  L78                 Accepts]: Start accepts. Automaton has 9101 states and 12176 transitions. Word has length 310
[2019-10-13 18:05:21,188 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:21,188 INFO  L462      AbstractCegarLoop]: Abstraction has 9101 states and 12176 transitions.
[2019-10-13 18:05:21,188 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:05:21,188 INFO  L276                IsEmpty]: Start isEmpty. Operand 9101 states and 12176 transitions.
[2019-10-13 18:05:21,204 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 425
[2019-10-13 18:05:21,204 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:21,205 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:21,410 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:21,413 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:21,421 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:21,423 INFO  L82        PathProgramCache]: Analyzing trace with hash -1283701567, now seen corresponding path program 1 times
[2019-10-13 18:05:21,423 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:21,423 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432822787]
[2019-10-13 18:05:21,424 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:21,424 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:21,424 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:21,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:21,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:21,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat