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/Problem14_label43.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:03:14,141 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 18:03:14,143 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 18:03:14,201 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 18:03:14,223 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:03:14,223 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:03:14,225 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:03:14,225 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:03:14,225 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:03:14,226 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:03:14,226 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:03:14,226 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:03:14,226 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:03:14,226 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:03:14,228 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:03:14,228 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:03:14,228 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:03:14,228 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:03:14,229 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:03:14,229 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:03:14,229 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:03:14,229 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:03:14,229 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:03:14,230 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:03:14,230 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:03:14,230 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:03:14,231 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:03:14,231 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:03:14,231 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:03:14,231 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:03:14,231 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:03:14,232 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:03:14,232 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:03:14,523 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:03:14,544 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:03:14,547 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:03:14,549 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:03:14,549 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:03:14,550 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label43.c
[2019-10-13 18:03:14,632 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1697f00ff/742e870728b34a0e9d3e635a1c8d08bf/FLAGe1c77e143
[2019-10-13 18:03:15,247 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:03:15,247 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label43.c
[2019-10-13 18:03:15,275 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1697f00ff/742e870728b34a0e9d3e635a1c8d08bf/FLAGe1c77e143
[2019-10-13 18:03:15,465 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1697f00ff/742e870728b34a0e9d3e635a1c8d08bf
[2019-10-13 18:03:15,474 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:03:15,475 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:03:15,476 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:03:15,476 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:03:15,479 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:03:15,479 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:15" (1/1) ...
[2019-10-13 18:03:15,481 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d09c68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:15, skipping insertion in model container
[2019-10-13 18:03:15,482 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:15" (1/1) ...
[2019-10-13 18:03:15,488 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:03:15,557 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:03:16,475 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:03:16,480 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:03:16,601 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:03:16,616 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:03:16,616 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16 WrapperNode
[2019-10-13 18:03:16,616 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:03:16,617 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:03:16,617 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:03:16,618 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:03:16,628 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (1/1) ...
[2019-10-13 18:03:16,629 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (1/1) ...
[2019-10-13 18:03:16,651 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (1/1) ...
[2019-10-13 18:03:16,652 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (1/1) ...
[2019-10-13 18:03:16,697 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (1/1) ...
[2019-10-13 18:03:16,731 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (1/1) ...
[2019-10-13 18:03:16,748 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (1/1) ...
[2019-10-13 18:03:16,765 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:03:16,766 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:03:16,766 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:03:16,767 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:03:16,771 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (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 18:03:16,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:03:16,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:03:16,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:03:16,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:03:16,868 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:03:16,869 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:03:16,869 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:03:16,869 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:03:16,870 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:03:16,870 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:03:16,870 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:03:18,327 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:03:18,328 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:03:18,329 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:18 BoogieIcfgContainer
[2019-10-13 18:03:18,329 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:03:18,331 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:03:18,331 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:03:18,334 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:03:18,334 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:03:15" (1/3) ...
[2019-10-13 18:03:18,335 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436cfa68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:18, skipping insertion in model container
[2019-10-13 18:03:18,336 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:16" (2/3) ...
[2019-10-13 18:03:18,336 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436cfa68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:18, skipping insertion in model container
[2019-10-13 18:03:18,336 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:18" (3/3) ...
[2019-10-13 18:03:18,338 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem14_label43.c
[2019-10-13 18:03:18,348 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:03:18,357 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:03:18,369 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:03:18,398 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:03:18,398 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:03:18,398 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:03:18,399 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:03:18,399 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:03:18,399 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:03:18,399 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:03:18,399 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:03:18,433 INFO  L276                IsEmpty]: Start isEmpty. Operand 254 states.
[2019-10-13 18:03:18,442 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2019-10-13 18:03:18,442 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:18,443 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]
[2019-10-13 18:03:18,445 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:18,452 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:18,453 INFO  L82        PathProgramCache]: Analyzing trace with hash 1143384842, now seen corresponding path program 1 times
[2019-10-13 18:03:18,462 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:18,462 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966239554]
[2019-10-13 18:03:18,463 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:18,463 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:18,463 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:18,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:18,718 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:18,745 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 18:03:18,745 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966239554]
[2019-10-13 18:03:18,746 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:03:18,747 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:03:18,747 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733298411]
[2019-10-13 18:03:18,752 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:03:18,752 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:18,766 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:03:18,767 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:03:18,770 INFO  L87              Difference]: Start difference. First operand 254 states. Second operand 5 states.
[2019-10-13 18:03:21,317 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:21,317 INFO  L93              Difference]: Finished difference Result 886 states and 1613 transitions.
[2019-10-13 18:03:21,321 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:03:21,323 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 21
[2019-10-13 18:03:21,323 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:21,343 INFO  L225             Difference]: With dead ends: 886
[2019-10-13 18:03:21,344 INFO  L226             Difference]: Without dead ends: 564
[2019-10-13 18:03:21,354 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 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 18:03:21,374 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 564 states.
[2019-10-13 18:03:21,443 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558.
[2019-10-13 18:03:21,445 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 558 states.
[2019-10-13 18:03:21,448 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions.
[2019-10-13 18:03:21,450 INFO  L78                 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 21
[2019-10-13 18:03:21,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:21,451 INFO  L462      AbstractCegarLoop]: Abstraction has 558 states and 906 transitions.
[2019-10-13 18:03:21,451 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:03:21,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions.
[2019-10-13 18:03:21,456 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2019-10-13 18:03:21,456 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:21,457 INFO  L380         BasicCegarLoop]: trace histogram [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]
[2019-10-13 18:03:21,457 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:21,458 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:21,458 INFO  L82        PathProgramCache]: Analyzing trace with hash 1758836454, now seen corresponding path program 1 times
[2019-10-13 18:03:21,458 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:21,458 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437405004]
[2019-10-13 18:03:21,459 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:21,459 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:21,459 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:21,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:21,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:21,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:21,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:03:21,924 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437405004]
[2019-10-13 18:03:21,924 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:03:21,924 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 18:03:21,924 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898530127]
[2019-10-13 18:03:21,927 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:03:21,927 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:21,927 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:03:21,928 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:03:21,928 INFO  L87              Difference]: Start difference. First operand 558 states and 906 transitions. Second operand 9 states.
[2019-10-13 18:03:23,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:23,874 INFO  L93              Difference]: Finished difference Result 1320 states and 2174 transitions.
[2019-10-13 18:03:23,878 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-13 18:03:23,879 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 107
[2019-10-13 18:03:23,879 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:23,884 INFO  L225             Difference]: With dead ends: 1320
[2019-10-13 18:03:23,885 INFO  L226             Difference]: Without dead ends: 768
[2019-10-13 18:03:23,887 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:03:23,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 768 states.
[2019-10-13 18:03:23,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 566.
[2019-10-13 18:03:23,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 566 states.
[2019-10-13 18:03:23,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 819 transitions.
[2019-10-13 18:03:23,949 INFO  L78                 Accepts]: Start accepts. Automaton has 566 states and 819 transitions. Word has length 107
[2019-10-13 18:03:23,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:23,950 INFO  L462      AbstractCegarLoop]: Abstraction has 566 states and 819 transitions.
[2019-10-13 18:03:23,951 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:03:23,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 566 states and 819 transitions.
[2019-10-13 18:03:23,955 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2019-10-13 18:03:23,957 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:23,958 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:03:23,959 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:23,959 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:23,959 INFO  L82        PathProgramCache]: Analyzing trace with hash 1887369717, now seen corresponding path program 1 times
[2019-10-13 18:03:23,959 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:23,960 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526851631]
[2019-10-13 18:03:23,960 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:23,960 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:23,960 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:23,982 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:24,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:24,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:24,143 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:03:24,144 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526851631]
[2019-10-13 18:03:24,144 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824917189]
[2019-10-13 18:03:24,145 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 18:03:24,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:24,222 INFO  L256         TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:03:24,243 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:24,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:03:24,323 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:03:24,323 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-13 18:03:24,323 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020825894]
[2019-10-13 18:03:24,324 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:03:24,324 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:24,324 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:03:24,325 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:03:24,325 INFO  L87              Difference]: Start difference. First operand 566 states and 819 transitions. Second operand 3 states.
[2019-10-13 18:03:25,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:25,214 INFO  L93              Difference]: Finished difference Result 1680 states and 2467 transitions.
[2019-10-13 18:03:25,215 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 18:03:25,215 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 116
[2019-10-13 18:03:25,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:25,223 INFO  L225             Difference]: With dead ends: 1680
[2019-10-13 18:03:25,223 INFO  L226             Difference]: Without dead ends: 1120
[2019-10-13 18:03:25,225 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:03:25,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1120 states.
[2019-10-13 18:03:25,254 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 934.
[2019-10-13 18:03:25,255 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 934 states.
[2019-10-13 18:03:25,261 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1279 transitions.
[2019-10-13 18:03:25,261 INFO  L78                 Accepts]: Start accepts. Automaton has 934 states and 1279 transitions. Word has length 116
[2019-10-13 18:03:25,262 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:25,262 INFO  L462      AbstractCegarLoop]: Abstraction has 934 states and 1279 transitions.
[2019-10-13 18:03:25,262 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 18:03:25,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 934 states and 1279 transitions.
[2019-10-13 18:03:25,267 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2019-10-13 18:03:25,268 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:25,268 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:03:25,471 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:25,472 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:25,472 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:25,472 INFO  L82        PathProgramCache]: Analyzing trace with hash -1771960234, now seen corresponding path program 1 times
[2019-10-13 18:03:25,472 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:25,473 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993609339]
[2019-10-13 18:03:25,473 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:25,473 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:25,473 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:25,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:25,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:25,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:25,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:26,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:03:26,364 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993609339]
[2019-10-13 18:03:26,364 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62849292]
[2019-10-13 18:03:26,364 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 18:03:26,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:26,446 INFO  L256         TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 18:03:26,453 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:26,510 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:03:26,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-10-13 18:03:26,598 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:03:26,598 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15
[2019-10-13 18:03:26,598 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994703784]
[2019-10-13 18:03:26,599 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:03:26,599 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:26,600 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:03:26,600 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210
[2019-10-13 18:03:26,600 INFO  L87              Difference]: Start difference. First operand 934 states and 1279 transitions. Second operand 5 states.
[2019-10-13 18:03:28,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:28,251 INFO  L93              Difference]: Finished difference Result 2080 states and 2868 transitions.
[2019-10-13 18:03:28,251 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 18:03:28,252 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 219
[2019-10-13 18:03:28,252 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:28,261 INFO  L225             Difference]: With dead ends: 2080
[2019-10-13 18:03:28,261 INFO  L226             Difference]: Without dead ends: 1152
[2019-10-13 18:03:28,264 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 221 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2019-10-13 18:03:28,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1152 states.
[2019-10-13 18:03:28,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1132.
[2019-10-13 18:03:28,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1132 states.
[2019-10-13 18:03:28,316 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1500 transitions.
[2019-10-13 18:03:28,316 INFO  L78                 Accepts]: Start accepts. Automaton has 1132 states and 1500 transitions. Word has length 219
[2019-10-13 18:03:28,319 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:28,319 INFO  L462      AbstractCegarLoop]: Abstraction has 1132 states and 1500 transitions.
[2019-10-13 18:03:28,320 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:03:28,320 INFO  L276                IsEmpty]: Start isEmpty. Operand 1132 states and 1500 transitions.
[2019-10-13 18:03:28,325 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 304
[2019-10-13 18:03:28,325 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:28,326 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:28,530 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:28,531 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:28,531 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:28,531 INFO  L82        PathProgramCache]: Analyzing trace with hash -1331053746, now seen corresponding path program 1 times
[2019-10-13 18:03:28,532 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:28,532 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404511394]
[2019-10-13 18:03:28,533 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:28,533 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:28,533 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:28,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:28,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:28,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:28,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:29,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:29,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 296 backedges. 52 proven. 237 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2019-10-13 18:03:29,822 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404511394]
[2019-10-13 18:03:29,822 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039620735]
[2019-10-13 18:03:29,822 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 18:03:29,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:29,923 INFO  L256         TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 26 conjunts are in the unsatisfiable core
[2019-10-13 18:03:29,931 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:30,020 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 4 terms
[2019-10-13 18:03:30,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 296 backedges. 228 proven. 53 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-10-13 18:03:30,198 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:03:30,199 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16
[2019-10-13 18:03:30,199 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702493854]
[2019-10-13 18:03:30,200 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 16 states
[2019-10-13 18:03:30,200 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:30,200 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2019-10-13 18:03:30,201 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2019-10-13 18:03:30,201 INFO  L87              Difference]: Start difference. First operand 1132 states and 1500 transitions. Second operand 16 states.
[2019-10-13 18:03:34,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:34,574 INFO  L93              Difference]: Finished difference Result 2565 states and 3399 transitions.
[2019-10-13 18:03:34,574 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2019-10-13 18:03:34,574 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 303
[2019-10-13 18:03:34,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:34,583 INFO  L225             Difference]: With dead ends: 2565
[2019-10-13 18:03:34,583 INFO  L226             Difference]: Without dead ends: 1392
[2019-10-13 18:03:34,587 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190
[2019-10-13 18:03:34,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1392 states.
[2019-10-13 18:03:34,623 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1324.
[2019-10-13 18:03:34,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1324 states.
[2019-10-13 18:03:34,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1573 transitions.
[2019-10-13 18:03:34,628 INFO  L78                 Accepts]: Start accepts. Automaton has 1324 states and 1573 transitions. Word has length 303
[2019-10-13 18:03:34,629 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:34,629 INFO  L462      AbstractCegarLoop]: Abstraction has 1324 states and 1573 transitions.
[2019-10-13 18:03:34,629 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2019-10-13 18:03:34,629 INFO  L276                IsEmpty]: Start isEmpty. Operand 1324 states and 1573 transitions.
[2019-10-13 18:03:34,634 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 329
[2019-10-13 18:03:34,634 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:34,635 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:03:34,838 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:34,839 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:34,840 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:34,840 INFO  L82        PathProgramCache]: Analyzing trace with hash 1828566909, now seen corresponding path program 1 times
[2019-10-13 18:03:34,841 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:34,841 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998722155]
[2019-10-13 18:03:34,842 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:34,842 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:34,842 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:34,888 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:34,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:35,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:35,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:35,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:36,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 210 proven. 8 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked.
[2019-10-13 18:03:36,161 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998722155]
[2019-10-13 18:03:36,161 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142936714]
[2019-10-13 18:03:36,161 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 18:03:36,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:36,282 INFO  L256         TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:03:36,288 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:36,336 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-13 18:03:36,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2019-10-13 18:03:36,465 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:03:36,465 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17
[2019-10-13 18:03:36,465 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978959549]
[2019-10-13 18:03:36,466 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:03:36,466 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:36,467 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:03:36,467 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272
[2019-10-13 18:03:36,467 INFO  L87              Difference]: Start difference. First operand 1324 states and 1573 transitions. Second operand 5 states.
[2019-10-13 18:03:37,618 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:37,618 INFO  L93              Difference]: Finished difference Result 3408 states and 4139 transitions.
[2019-10-13 18:03:37,620 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 18:03:37,620 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 328
[2019-10-13 18:03:37,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:37,631 INFO  L225             Difference]: With dead ends: 3408
[2019-10-13 18:03:37,632 INFO  L226             Difference]: Without dead ends: 2090
[2019-10-13 18:03:37,636 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 331 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380
[2019-10-13 18:03:37,639 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2090 states.
[2019-10-13 18:03:37,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1892.
[2019-10-13 18:03:37,687 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1892 states.
[2019-10-13 18:03:37,695 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2254 transitions.
[2019-10-13 18:03:37,695 INFO  L78                 Accepts]: Start accepts. Automaton has 1892 states and 2254 transitions. Word has length 328
[2019-10-13 18:03:37,696 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:37,696 INFO  L462      AbstractCegarLoop]: Abstraction has 1892 states and 2254 transitions.
[2019-10-13 18:03:37,696 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:03:37,696 INFO  L276                IsEmpty]: Start isEmpty. Operand 1892 states and 2254 transitions.
[2019-10-13 18:03:37,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 439
[2019-10-13 18:03:37,705 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:37,706 INFO  L380         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:03:37,910 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:37,911 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:37,911 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:37,912 INFO  L82        PathProgramCache]: Analyzing trace with hash 1277138289, now seen corresponding path program 1 times
[2019-10-13 18:03:37,912 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:37,912 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252432646]
[2019-10-13 18:03:37,913 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:37,913 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:37,913 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:37,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 642 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked.
[2019-10-13 18:03:38,437 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252432646]
[2019-10-13 18:03:38,437 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516864343]
[2019-10-13 18:03:38,437 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 18:03:38,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,562 INFO  L256         TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:03:38,568 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:38,593 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:03:38,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 642 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2019-10-13 18:03:38,754 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:03:38,755 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11
[2019-10-13 18:03:38,755 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582038769]
[2019-10-13 18:03:38,756 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 18:03:38,756 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:38,757 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 18:03:38,757 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:03:38,757 INFO  L87              Difference]: Start difference. First operand 1892 states and 2254 transitions. Second operand 11 states.
[2019-10-13 18:03:41,184 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:41,185 INFO  L93              Difference]: Finished difference Result 4180 states and 5149 transitions.
[2019-10-13 18:03:41,185 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2019-10-13 18:03:41,185 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 438
[2019-10-13 18:03:41,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:41,196 INFO  L225             Difference]: With dead ends: 4180
[2019-10-13 18:03:41,196 INFO  L226             Difference]: Without dead ends: 2476
[2019-10-13 18:03:41,200 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 455 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420
[2019-10-13 18:03:41,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2476 states.
[2019-10-13 18:03:41,260 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2464.
[2019-10-13 18:03:41,260 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2464 states.
[2019-10-13 18:03:41,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3005 transitions.
[2019-10-13 18:03:41,268 INFO  L78                 Accepts]: Start accepts. Automaton has 2464 states and 3005 transitions. Word has length 438
[2019-10-13 18:03:41,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:41,269 INFO  L462      AbstractCegarLoop]: Abstraction has 2464 states and 3005 transitions.
[2019-10-13 18:03:41,269 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-13 18:03:41,269 INFO  L276                IsEmpty]: Start isEmpty. Operand 2464 states and 3005 transitions.
[2019-10-13 18:03:41,274 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 457
[2019-10-13 18:03:41,274 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:41,275 INFO  L380         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:03:41,479 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:41,479 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:41,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:41,480 INFO  L82        PathProgramCache]: Analyzing trace with hash 251334581, now seen corresponding path program 1 times
[2019-10-13 18:03:41,481 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:41,481 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65242102]
[2019-10-13 18:03:41,481 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:41,482 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:41,482 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:41,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:41,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:41,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:41,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:41,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:42,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:42,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 642 backedges. 168 proven. 310 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked.
[2019-10-13 18:03:42,414 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65242102]
[2019-10-13 18:03:42,415 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018807595]
[2019-10-13 18:03:42,415 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 18:03:42,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:42,542 INFO  L256         TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 18:03:42,548 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:42,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 642 backedges. 519 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2019-10-13 18:03:42,695 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:03:42,695 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13
[2019-10-13 18:03:42,695 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692151270]
[2019-10-13 18:03:42,696 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 13 states
[2019-10-13 18:03:42,696 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:42,696 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2019-10-13 18:03:42,696 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2019-10-13 18:03:42,697 INFO  L87              Difference]: Start difference. First operand 2464 states and 3005 transitions. Second operand 13 states.
[2019-10-13 18:03:46,591 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:46,592 INFO  L93              Difference]: Finished difference Result 5880 states and 7242 transitions.
[2019-10-13 18:03:46,592 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2019-10-13 18:03:46,592 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 456
[2019-10-13 18:03:46,593 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:46,606 INFO  L225             Difference]: With dead ends: 5880
[2019-10-13 18:03:46,607 INFO  L226             Difference]: Without dead ends: 3606
[2019-10-13 18:03:46,613 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 485 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482
[2019-10-13 18:03:46,616 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3606 states.
[2019-10-13 18:03:46,689 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3220.
[2019-10-13 18:03:46,689 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3220 states.
[2019-10-13 18:03:46,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 3803 transitions.
[2019-10-13 18:03:46,697 INFO  L78                 Accepts]: Start accepts. Automaton has 3220 states and 3803 transitions. Word has length 456
[2019-10-13 18:03:46,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:46,698 INFO  L462      AbstractCegarLoop]: Abstraction has 3220 states and 3803 transitions.
[2019-10-13 18:03:46,698 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2019-10-13 18:03:46,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 3220 states and 3803 transitions.
[2019-10-13 18:03:46,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 541
[2019-10-13 18:03:46,705 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:46,706 INFO  L380         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 18:03:46,918 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:46,918 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:46,918 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:46,919 INFO  L82        PathProgramCache]: Analyzing trace with hash -263331539, now seen corresponding path program 1 times
[2019-10-13 18:03:46,919 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:46,920 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611335666]
[2019-10-13 18:03:46,920 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:46,920 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:46,920 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:46,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:47,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:47,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:47,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:47,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:47,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:47,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:48,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 992 backedges. 388 proven. 93 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked.
[2019-10-13 18:03:48,748 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611335666]
[2019-10-13 18:03:48,748 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669814841]
[2019-10-13 18:03:48,749 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:48,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:48,889 INFO  L256         TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 22 conjunts are in the unsatisfiable core
[2019-10-13 18:03:48,897 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:48,930 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 4 terms
[2019-10-13 18:03:49,412 INFO  L134       CoverageAnalysis]: Checked inductivity of 992 backedges. 704 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked.
[2019-10-13 18:03:49,413 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:03:49,413 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 12
[2019-10-13 18:03:49,413 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699003395]
[2019-10-13 18:03:49,414 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-13 18:03:49,414 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:49,414 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-13 18:03:49,415 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:03:49,415 INFO  L87              Difference]: Start difference. First operand 3220 states and 3803 transitions. Second operand 12 states.