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/Problem11_label35.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 21:59:24,373 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 21:59:24,466 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-14 21:59:24,495 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 21:59:24,495 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 21:59:24,502 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 21:59:24,502 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 21:59:24,503 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 21:59:24,503 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 21:59:24,503 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 21:59:24,503 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 21:59:24,503 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 21:59:24,504 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 21:59:24,504 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 21:59:24,504 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 21:59:24,508 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 21:59:24,508 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 21:59:24,508 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 21:59:24,508 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 21:59:24,509 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 21:59:24,509 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 21:59:24,509 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 21:59:24,510 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 21:59:24,510 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 21:59:24,510 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:59:24,510 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 21:59:24,510 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 21:59:24,511 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 21:59:24,511 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 21:59:24,511 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 21:59:24,511 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 21:59:24,511 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 21:59:24,806 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 21:59:24,820 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 21:59:24,823 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 21:59:24,825 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 21:59:24,825 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 21:59:24,826 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35.c
[2019-10-14 21:59:24,901 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8458195e2/e6628c85df2048729d68fb0309229180/FLAG2db4763ff
[2019-10-14 21:59:25,552 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 21:59:25,552 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label35.c
[2019-10-14 21:59:25,567 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8458195e2/e6628c85df2048729d68fb0309229180/FLAG2db4763ff
[2019-10-14 21:59:25,755 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8458195e2/e6628c85df2048729d68fb0309229180
[2019-10-14 21:59:25,763 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 21:59:25,764 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 21:59:25,765 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 21:59:25,765 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 21:59:25,769 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 21:59:25,770 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:25" (1/1) ...
[2019-10-14 21:59:25,773 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325392ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:25, skipping insertion in model container
[2019-10-14 21:59:25,773 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:25" (1/1) ...
[2019-10-14 21:59:25,783 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 21:59:25,850 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 21:59:26,513 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:59:26,524 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 21:59:26,838 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:59:26,866 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 21:59:26,867 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26 WrapperNode
[2019-10-14 21:59:26,867 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 21:59:26,869 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 21:59:26,869 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 21:59:26,869 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 21:59:26,891 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
[2019-10-14 21:59:26,892 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
[2019-10-14 21:59:26,921 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
[2019-10-14 21:59:26,921 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
[2019-10-14 21:59:26,986 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
[2019-10-14 21:59:27,023 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
[2019-10-14 21:59:27,045 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
[2019-10-14 21:59:27,060 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 21:59:27,061 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 21:59:27,061 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 21:59:27,061 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 21:59:27,062 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:59:27,142 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 21:59:27,142 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 21:59:27,143 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 21:59:27,143 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 21:59:27,143 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 21:59:27,144 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 21:59:27,144 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 21:59:27,144 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 21:59:27,145 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 21:59:27,145 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 21:59:27,145 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 21:59:29,102 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 21:59:29,103 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 21:59:29,104 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:29 BoogieIcfgContainer
[2019-10-14 21:59:29,105 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 21:59:29,106 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 21:59:29,106 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 21:59:29,110 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 21:59:29,110 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:59:25" (1/3) ...
[2019-10-14 21:59:29,111 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bc50d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:29, skipping insertion in model container
[2019-10-14 21:59:29,112 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:26" (2/3) ...
[2019-10-14 21:59:29,112 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bc50d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:29, skipping insertion in model container
[2019-10-14 21:59:29,113 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:29" (3/3) ...
[2019-10-14 21:59:29,115 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem11_label35.c
[2019-10-14 21:59:29,125 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 21:59:29,135 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 21:59:29,148 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 21:59:29,178 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 21:59:29,179 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 21:59:29,179 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 21:59:29,179 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 21:59:29,179 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 21:59:29,180 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 21:59:29,180 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 21:59:29,180 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 21:59:29,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2019-10-14 21:59:29,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2019-10-14 21:59:29,243 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:29,244 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:29,246 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:29,256 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:29,256 INFO  L82        PathProgramCache]: Analyzing trace with hash 524759243, now seen corresponding path program 1 times
[2019-10-14 21:59:29,264 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:29,264 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252864674]
[2019-10-14 21:59:29,264 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:29,265 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:29,265 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:29,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:29,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:29,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:29,675 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252864674]
[2019-10-14 21:59:29,676 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:59:29,676 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 21:59:29,677 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030064494]
[2019-10-14 21:59:29,681 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:59:29,682 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:29,696 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:59:29,697 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 21:59:29,699 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 5 states.
[2019-10-14 21:59:33,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:33,276 INFO  L93              Difference]: Finished difference Result 1006 states and 1797 transitions.
[2019-10-14 21:59:33,276 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 21:59:33,278 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 64
[2019-10-14 21:59:33,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:33,299 INFO  L225             Difference]: With dead ends: 1006
[2019-10-14 21:59:33,300 INFO  L226             Difference]: Without dead ends: 630
[2019-10-14 21:59:33,310 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:59:33,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 630 states.
[2019-10-14 21:59:33,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 620.
[2019-10-14 21:59:33,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 620 states.
[2019-10-14 21:59:33,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 915 transitions.
[2019-10-14 21:59:33,423 INFO  L78                 Accepts]: Start accepts. Automaton has 620 states and 915 transitions. Word has length 64
[2019-10-14 21:59:33,425 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:33,425 INFO  L462      AbstractCegarLoop]: Abstraction has 620 states and 915 transitions.
[2019-10-14 21:59:33,426 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:59:33,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 620 states and 915 transitions.
[2019-10-14 21:59:33,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2019-10-14 21:59:33,445 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:33,445 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:33,446 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:33,446 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:33,448 INFO  L82        PathProgramCache]: Analyzing trace with hash -1140309603, now seen corresponding path program 1 times
[2019-10-14 21:59:33,449 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:33,449 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344762197]
[2019-10-14 21:59:33,449 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:33,449 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:33,450 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:33,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:33,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:33,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:33,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:33,793 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344762197]
[2019-10-14 21:59:33,794 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483990008]
[2019-10-14 21:59:33,794 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:33,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:33,881 INFO  L256         TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:59:33,892 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:33,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:33,985 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:33,985 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-14 21:59:33,986 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450516798]
[2019-10-14 21:59:33,990 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:59:33,991 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:33,991 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:59:33,991 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:59:33,991 INFO  L87              Difference]: Start difference. First operand 620 states and 915 transitions. Second operand 3 states.
[2019-10-14 21:59:35,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:35,150 INFO  L93              Difference]: Finished difference Result 1816 states and 2718 transitions.
[2019-10-14 21:59:35,151 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:59:35,151 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 137
[2019-10-14 21:59:35,152 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:35,159 INFO  L225             Difference]: With dead ends: 1816
[2019-10-14 21:59:35,160 INFO  L226             Difference]: Without dead ends: 1202
[2019-10-14 21:59:35,163 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:59:35,165 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1202 states.
[2019-10-14 21:59:35,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1194.
[2019-10-14 21:59:35,213 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1194 states.
[2019-10-14 21:59:35,219 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1631 transitions.
[2019-10-14 21:59:35,220 INFO  L78                 Accepts]: Start accepts. Automaton has 1194 states and 1631 transitions. Word has length 137
[2019-10-14 21:59:35,224 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:35,224 INFO  L462      AbstractCegarLoop]: Abstraction has 1194 states and 1631 transitions.
[2019-10-14 21:59:35,224 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:59:35,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 1194 states and 1631 transitions.
[2019-10-14 21:59:35,230 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2019-10-14 21:59:35,231 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:35,231 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-14 21:59:35,436 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:35,442 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:35,443 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:35,443 INFO  L82        PathProgramCache]: Analyzing trace with hash -1496412874, now seen corresponding path program 1 times
[2019-10-14 21:59:35,443 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:35,443 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261498037]
[2019-10-14 21:59:35,444 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:35,444 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:35,444 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:35,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:35,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:35,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:35,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:35,793 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261498037]
[2019-10-14 21:59:35,794 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:59:35,794 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-14 21:59:35,794 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449098326]
[2019-10-14 21:59:35,796 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-14 21:59:35,805 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:35,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-14 21:59:35,805 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:59:35,805 INFO  L87              Difference]: Start difference. First operand 1194 states and 1631 transitions. Second operand 7 states.
[2019-10-14 21:59:38,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:38,277 INFO  L93              Difference]: Finished difference Result 3415 states and 4910 transitions.
[2019-10-14 21:59:38,278 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-14 21:59:38,278 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 162
[2019-10-14 21:59:38,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:38,292 INFO  L225             Difference]: With dead ends: 3415
[2019-10-14 21:59:38,293 INFO  L226             Difference]: Without dead ends: 2227
[2019-10-14 21:59:38,297 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2019-10-14 21:59:38,300 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2227 states.
[2019-10-14 21:59:38,368 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2196.
[2019-10-14 21:59:38,368 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2196 states.
[2019-10-14 21:59:38,378 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2885 transitions.
[2019-10-14 21:59:38,378 INFO  L78                 Accepts]: Start accepts. Automaton has 2196 states and 2885 transitions. Word has length 162
[2019-10-14 21:59:38,379 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:38,379 INFO  L462      AbstractCegarLoop]: Abstraction has 2196 states and 2885 transitions.
[2019-10-14 21:59:38,379 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-14 21:59:38,379 INFO  L276                IsEmpty]: Start isEmpty. Operand 2196 states and 2885 transitions.
[2019-10-14 21:59:38,385 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2019-10-14 21:59:38,385 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:38,386 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:38,386 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:38,386 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:38,386 INFO  L82        PathProgramCache]: Analyzing trace with hash -229417523, now seen corresponding path program 1 times
[2019-10-14 21:59:38,387 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:38,387 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403707814]
[2019-10-14 21:59:38,387 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:38,387 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:38,387 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:38,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:38,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:38,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:38,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:38,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-14 21:59:38,717 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403707814]
[2019-10-14 21:59:38,717 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222166998]
[2019-10-14 21:59:38,717 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:38,838 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:38,840 INFO  L256         TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:59:38,849 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:38,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-14 21:59:38,912 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:38,912 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-14 21:59:38,912 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866177468]
[2019-10-14 21:59:38,913 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:59:38,913 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:38,914 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:59:38,914 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:59:38,914 INFO  L87              Difference]: Start difference. First operand 2196 states and 2885 transitions. Second operand 3 states.
[2019-10-14 21:59:39,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:39,996 INFO  L93              Difference]: Finished difference Result 5559 states and 7527 transitions.
[2019-10-14 21:59:39,996 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:59:39,996 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 222
[2019-10-14 21:59:39,997 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:40,014 INFO  L225             Difference]: With dead ends: 5559
[2019-10-14 21:59:40,015 INFO  L226             Difference]: Without dead ends: 3369
[2019-10-14 21:59:40,021 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:59:40,025 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3369 states.
[2019-10-14 21:59:40,106 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3166.
[2019-10-14 21:59:40,106 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3166 states.
[2019-10-14 21:59:40,119 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 4329 transitions.
[2019-10-14 21:59:40,120 INFO  L78                 Accepts]: Start accepts. Automaton has 3166 states and 4329 transitions. Word has length 222
[2019-10-14 21:59:40,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:40,120 INFO  L462      AbstractCegarLoop]: Abstraction has 3166 states and 4329 transitions.
[2019-10-14 21:59:40,121 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:59:40,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 3166 states and 4329 transitions.
[2019-10-14 21:59:40,128 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 228
[2019-10-14 21:59:40,128 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:40,129 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-14 21:59:40,340 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:40,341 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:40,342 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:40,342 INFO  L82        PathProgramCache]: Analyzing trace with hash 1392516474, now seen corresponding path program 1 times
[2019-10-14 21:59:40,342 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:40,343 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190100209]
[2019-10-14 21:59:40,343 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:40,344 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:40,344 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:40,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 114 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 21:59:40,696 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190100209]
[2019-10-14 21:59:40,696 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636229608]
[2019-10-14 21:59:40,697 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:40,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,786 INFO  L256         TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 21:59:40,791 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:40,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2019-10-14 21:59:40,862 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:40,862 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-14 21:59:40,863 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720153445]
[2019-10-14 21:59:40,863 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:59:40,864 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:40,864 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:59:40,864 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 21:59:40,864 INFO  L87              Difference]: Start difference. First operand 3166 states and 4329 transitions. Second operand 5 states.
[2019-10-14 21:59:42,506 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:42,506 INFO  L93              Difference]: Finished difference Result 6609 states and 9187 transitions.
[2019-10-14 21:59:42,507 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 21:59:42,507 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 227
[2019-10-14 21:59:42,507 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:42,525 INFO  L225             Difference]: With dead ends: 6609
[2019-10-14 21:59:42,526 INFO  L226             Difference]: Without dead ends: 3449
[2019-10-14 21:59:42,534 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-14 21:59:42,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3449 states.
[2019-10-14 21:59:42,615 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3396.
[2019-10-14 21:59:42,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3396 states.
[2019-10-14 21:59:42,626 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 4454 transitions.
[2019-10-14 21:59:42,627 INFO  L78                 Accepts]: Start accepts. Automaton has 3396 states and 4454 transitions. Word has length 227
[2019-10-14 21:59:42,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:42,627 INFO  L462      AbstractCegarLoop]: Abstraction has 3396 states and 4454 transitions.
[2019-10-14 21:59:42,628 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:59:42,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 3396 states and 4454 transitions.
[2019-10-14 21:59:42,634 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 228
[2019-10-14 21:59:42,634 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:42,634 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:42,839 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:42,840 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:42,840 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:42,840 INFO  L82        PathProgramCache]: Analyzing trace with hash -176162622, now seen corresponding path program 1 times
[2019-10-14 21:59:42,841 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:42,841 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958908770]
[2019-10-14 21:59:42,842 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:42,842 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:42,842 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:42,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:42,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:42,972 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:42,998 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:43,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-14 21:59:43,059 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958908770]
[2019-10-14 21:59:43,059 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965078932]
[2019-10-14 21:59:43,059 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:43,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:43,155 INFO  L256         TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:59:43,158 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:43,207 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-14 21:59:43,208 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:43,208 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2019-10-14 21:59:43,208 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258787608]
[2019-10-14 21:59:43,209 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:59:43,210 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:43,210 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:59:43,210 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:59:43,210 INFO  L87              Difference]: Start difference. First operand 3396 states and 4454 transitions. Second operand 3 states.
[2019-10-14 21:59:44,308 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:44,309 INFO  L93              Difference]: Finished difference Result 7939 states and 10846 transitions.
[2019-10-14 21:59:44,309 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:59:44,309 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 227
[2019-10-14 21:59:44,310 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:44,330 INFO  L225             Difference]: With dead ends: 7939
[2019-10-14 21:59:44,330 INFO  L226             Difference]: Without dead ends: 4737
[2019-10-14 21:59:44,340 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:59:44,347 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4737 states.
[2019-10-14 21:59:44,458 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4737 to 4735.
[2019-10-14 21:59:44,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4735 states.
[2019-10-14 21:59:44,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 6133 transitions.
[2019-10-14 21:59:44,469 INFO  L78                 Accepts]: Start accepts. Automaton has 4735 states and 6133 transitions. Word has length 227
[2019-10-14 21:59:44,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:44,470 INFO  L462      AbstractCegarLoop]: Abstraction has 4735 states and 6133 transitions.
[2019-10-14 21:59:44,470 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:59:44,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 4735 states and 6133 transitions.
[2019-10-14 21:59:44,477 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2019-10-14 21:59:44,477 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:44,478 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-14 21:59:44,682 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:44,682 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:44,682 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:44,682 INFO  L82        PathProgramCache]: Analyzing trace with hash 860590599, now seen corresponding path program 1 times
[2019-10-14 21:59:44,683 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:44,683 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496721717]
[2019-10-14 21:59:44,683 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:44,683 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:44,684 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:44,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:44,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:44,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:44,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:45,033 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-14 21:59:45,035 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496721717]
[2019-10-14 21:59:45,035 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435889207]
[2019-10-14 21:59:45,036 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
[2019-10-14 21:59:45,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:45,149 INFO  L256         TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:59:45,153 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:45,212 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:59:45,214 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:45,214 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-10-14 21:59:45,214 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573573264]
[2019-10-14 21:59:45,215 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:59:45,215 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:45,215 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:59:45,216 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-10-14 21:59:45,216 INFO  L87              Difference]: Start difference. First operand 4735 states and 6133 transitions. Second operand 3 states.
[2019-10-14 21:59:46,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:46,329 INFO  L93              Difference]: Finished difference Result 10794 states and 14406 transitions.
[2019-10-14 21:59:46,330 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:59:46,330 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 228
[2019-10-14 21:59:46,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:46,360 INFO  L225             Difference]: With dead ends: 10794
[2019-10-14 21:59:46,360 INFO  L226             Difference]: Without dead ends: 6253
[2019-10-14 21:59:46,374 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-10-14 21:59:46,381 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6253 states.
[2019-10-14 21:59:46,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6253.
[2019-10-14 21:59:46,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6253 states.
[2019-10-14 21:59:46,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6253 states to 6253 states and 8078 transitions.
[2019-10-14 21:59:46,550 INFO  L78                 Accepts]: Start accepts. Automaton has 6253 states and 8078 transitions. Word has length 228
[2019-10-14 21:59:46,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:46,551 INFO  L462      AbstractCegarLoop]: Abstraction has 6253 states and 8078 transitions.
[2019-10-14 21:59:46,551 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:59:46,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 6253 states and 8078 transitions.
[2019-10-14 21:59:46,560 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2019-10-14 21:59:46,560 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:46,560 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-14 21:59:46,772 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:46,772 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:46,773 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:46,773 INFO  L82        PathProgramCache]: Analyzing trace with hash -1301706544, now seen corresponding path program 1 times
[2019-10-14 21:59:46,773 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:46,774 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090631833]
[2019-10-14 21:59:46,774 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:46,774 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:46,774 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:46,888 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:47,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:47,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:47,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:47,323 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 66 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-14 21:59:47,324 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090631833]
[2019-10-14 21:59:47,324 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934748826]
[2019-10-14 21:59:47,324 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
[2019-10-14 21:59:47,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:47,412 INFO  L256         TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-14 21:59:47,415 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:47,460 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-14 21:59:47,540 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2019-10-14 21:59:47,541 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:47,541 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16
[2019-10-14 21:59:47,541 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862140815]
[2019-10-14 21:59:47,541 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:59:47,542 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:47,542 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:59:47,542 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240
[2019-10-14 21:59:47,542 INFO  L87              Difference]: Start difference. First operand 6253 states and 8078 transitions. Second operand 5 states.
[2019-10-14 21:59:49,415 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:49,415 INFO  L93              Difference]: Finished difference Result 12361 states and 16092 transitions.
[2019-10-14 21:59:49,416 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-14 21:59:49,417 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 231
[2019-10-14 21:59:49,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:49,444 INFO  L225             Difference]: With dead ends: 12361
[2019-10-14 21:59:49,444 INFO  L226             Difference]: Without dead ends: 6302
[2019-10-14 21:59:49,462 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342
[2019-10-14 21:59:49,469 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6302 states.
[2019-10-14 21:59:49,602 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 6293.
[2019-10-14 21:59:49,602 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6293 states.
[2019-10-14 21:59:49,614 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 8161 transitions.
[2019-10-14 21:59:49,614 INFO  L78                 Accepts]: Start accepts. Automaton has 6293 states and 8161 transitions. Word has length 231
[2019-10-14 21:59:49,614 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:49,614 INFO  L462      AbstractCegarLoop]: Abstraction has 6293 states and 8161 transitions.
[2019-10-14 21:59:49,614 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:59:49,615 INFO  L276                IsEmpty]: Start isEmpty. Operand 6293 states and 8161 transitions.
[2019-10-14 21:59:49,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 306
[2019-10-14 21:59:49,626 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:49,626 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:49,831 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:49,831 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:49,831 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:49,832 INFO  L82        PathProgramCache]: Analyzing trace with hash 1649361938, now seen corresponding path program 1 times
[2019-10-14 21:59:49,832 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:49,832 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957826607]
[2019-10-14 21:59:49,832 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:49,832 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:49,832 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:49,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:50,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:50,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:50,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:50,579 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 87 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-14 21:59:50,579 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957826607]
[2019-10-14 21:59:50,579 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989519288]
[2019-10-14 21:59:50,580 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
[2019-10-14 21:59:50,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:50,695 INFO  L256         TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-14 21:59:50,714 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:50,811 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-14 21:59:50,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:50,931 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 21:59:50,931 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19
[2019-10-14 21:59:50,931 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994410852]
[2019-10-14 21:59:50,932 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 19 states
[2019-10-14 21:59:50,932 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:50,933 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2019-10-14 21:59:50,933 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342
[2019-10-14 21:59:50,933 INFO  L87              Difference]: Start difference. First operand 6293 states and 8161 transitions. Second operand 19 states.