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_label18.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:59:50,654 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-13 17:59:50,709 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-13 17:59:50,732 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 17:59:50,733 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:59:50,736 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:59:50,736 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 17:59:50,737 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 17:59:50,737 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:59:50,737 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 17:59:50,737 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 17:59:50,738 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 17:59:50,738 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 17:59:50,738 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:59:50,738 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:59:50,738 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:59:50,739 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 17:59:50,739 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 17:59:50,739 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 17:59:50,740 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:59:50,741 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:59:50,741 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 17:59:50,741 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 17:59:50,741 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 17:59:50,741 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:59:50,742 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:59:50,742 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:59:50,742 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:59:50,742 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 17:59:50,743 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:59:50,743 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:59:50,743 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:59:51,022 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:59:51,034 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:59:51,037 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:59:51,039 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 17:59:51,039 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 17:59:51,040 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c
[2019-10-13 17:59:51,102 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33921a4db/7bbb9bb2000343a7b2137c351a15d68b/FLAG11e797bee
[2019-10-13 17:59:51,684 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 17:59:51,685 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c
[2019-10-13 17:59:51,700 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33921a4db/7bbb9bb2000343a7b2137c351a15d68b/FLAG11e797bee
[2019-10-13 17:59:51,960 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33921a4db/7bbb9bb2000343a7b2137c351a15d68b
[2019-10-13 17:59:51,970 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:59:51,972 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:59:51,973 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:59:51,973 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:59:51,977 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:59:51,978 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:51" (1/1) ...
[2019-10-13 17:59:51,981 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b536ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:51, skipping insertion in model container
[2019-10-13 17:59:51,982 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:51" (1/1) ...
[2019-10-13 17:59:51,989 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 17:59:52,048 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:59:52,716 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:59:52,721 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 17:59:52,870 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:59:52,889 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 17:59:52,889 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52 WrapperNode
[2019-10-13 17:59:52,889 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:59:52,890 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:59:52,890 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:59:52,890 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:59:52,905 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
[2019-10-13 17:59:52,906 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
[2019-10-13 17:59:52,931 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
[2019-10-13 17:59:52,931 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
[2019-10-13 17:59:52,990 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
[2019-10-13 17:59:53,004 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
[2019-10-13 17:59:53,027 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
[2019-10-13 17:59:53,055 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:59:53,061 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:59:53,061 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:59:53,061 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:59:53,063 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:59:53,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:59:53,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:59:53,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 17:59:53,141 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:59:53,141 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 17:59:53,142 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:59:53,142 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:59:53,142 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 17:59:53,142 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:59:53,143 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:59:53,143 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:59:54,993 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:59:54,993 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 17:59:54,995 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:54 BoogieIcfgContainer
[2019-10-13 17:59:54,995 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:59:54,997 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:59:54,997 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:59:55,000 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:59:55,001 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:59:51" (1/3) ...
[2019-10-13 17:59:55,002 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203e7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:55, skipping insertion in model container
[2019-10-13 17:59:55,002 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:52" (2/3) ...
[2019-10-13 17:59:55,003 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203e7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:55, skipping insertion in model container
[2019-10-13 17:59:55,003 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:54" (3/3) ...
[2019-10-13 17:59:55,005 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem11_label18.c
[2019-10-13 17:59:55,016 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:59:55,025 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:59:55,039 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:59:55,069 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:59:55,070 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 17:59:55,070 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:59:55,070 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:59:55,070 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:59:55,071 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 17:59:55,071 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:59:55,071 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:59:55,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2019-10-13 17:59:55,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2019-10-13 17:59:55,104 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:55,106 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]
[2019-10-13 17:59:55,107 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:55,113 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:55,113 INFO  L82        PathProgramCache]: Analyzing trace with hash -1626993173, now seen corresponding path program 1 times
[2019-10-13 17:59:55,124 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:55,124 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651350128]
[2019-10-13 17:59:55,125 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:55,125 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:55,125 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:55,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:55,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:55,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:55,592 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651350128]
[2019-10-13 17:59:55,593 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:59:55,593 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:59:55,594 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883331989]
[2019-10-13 17:59:55,599 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:59:55,599 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:55,613 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:59:55,615 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:59:55,617 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 5 states.
[2019-10-13 17:59:58,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:58,737 INFO  L93              Difference]: Finished difference Result 998 states and 1793 transitions.
[2019-10-13 17:59:58,737 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:59:58,739 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 40
[2019-10-13 17:59:58,740 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:58,762 INFO  L225             Difference]: With dead ends: 998
[2019-10-13 17:59:58,762 INFO  L226             Difference]: Without dead ends: 638
[2019-10-13 17:59:58,773 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:59:58,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 638 states.
[2019-10-13 17:59:58,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 621.
[2019-10-13 17:59:58,874 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 621 states.
[2019-10-13 17:59:58,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 950 transitions.
[2019-10-13 17:59:58,881 INFO  L78                 Accepts]: Start accepts. Automaton has 621 states and 950 transitions. Word has length 40
[2019-10-13 17:59:58,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:58,882 INFO  L462      AbstractCegarLoop]: Abstraction has 621 states and 950 transitions.
[2019-10-13 17:59:58,883 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:59:58,884 INFO  L276                IsEmpty]: Start isEmpty. Operand 621 states and 950 transitions.
[2019-10-13 17:59:58,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2019-10-13 17:59:58,896 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:58,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:58,898 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:58,899 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:58,899 INFO  L82        PathProgramCache]: Analyzing trace with hash -1781272370, now seen corresponding path program 1 times
[2019-10-13 17:59:58,899 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:58,899 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403481168]
[2019-10-13 17:59:58,900 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:58,900 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:58,900 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:58,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:59,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:59,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:59,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:59,338 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403481168]
[2019-10-13 17:59:59,338 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:59:59,338 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 17:59:59,338 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679896414]
[2019-10-13 17:59:59,344 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 17:59:59,344 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:59,344 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 17:59:59,345 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:59:59,345 INFO  L87              Difference]: Start difference. First operand 621 states and 950 transitions. Second operand 8 states.
[2019-10-13 18:00:03,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:03,328 INFO  L93              Difference]: Finished difference Result 2487 states and 4246 transitions.
[2019-10-13 18:00:03,329 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-13 18:00:03,329 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 110
[2019-10-13 18:00:03,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:03,360 INFO  L225             Difference]: With dead ends: 2487
[2019-10-13 18:00:03,360 INFO  L226             Difference]: Without dead ends: 1872
[2019-10-13 18:00:03,366 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:00:03,370 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1872 states.
[2019-10-13 18:00:03,495 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1816.
[2019-10-13 18:00:03,495 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1816 states.
[2019-10-13 18:00:03,508 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2598 transitions.
[2019-10-13 18:00:03,508 INFO  L78                 Accepts]: Start accepts. Automaton has 1816 states and 2598 transitions. Word has length 110
[2019-10-13 18:00:03,510 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:03,510 INFO  L462      AbstractCegarLoop]: Abstraction has 1816 states and 2598 transitions.
[2019-10-13 18:00:03,511 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 18:00:03,511 INFO  L276                IsEmpty]: Start isEmpty. Operand 1816 states and 2598 transitions.
[2019-10-13 18:00:03,518 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2019-10-13 18:00:03,519 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:03,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:03,519 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:03,520 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:03,520 INFO  L82        PathProgramCache]: Analyzing trace with hash 559014170, now seen corresponding path program 1 times
[2019-10-13 18:00:03,520 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:03,521 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565639499]
[2019-10-13 18:00:03,521 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:03,522 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:03,522 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:03,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:03,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:03,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:03,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:00:03,922 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565639499]
[2019-10-13 18:00:03,922 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:00:03,923 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 18:00:03,923 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249670704]
[2019-10-13 18:00:03,924 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 18:00:03,924 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:03,925 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 18:00:03,925 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 18:00:03,925 INFO  L87              Difference]: Start difference. First operand 1816 states and 2598 transitions. Second operand 8 states.
[2019-10-13 18:00:06,955 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:06,955 INFO  L93              Difference]: Finished difference Result 5266 states and 7937 transitions.
[2019-10-13 18:00:06,956 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-13 18:00:06,965 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 120
[2019-10-13 18:00:06,966 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:06,993 INFO  L225             Difference]: With dead ends: 5266
[2019-10-13 18:00:06,993 INFO  L226             Difference]: Without dead ends: 3456
[2019-10-13 18:00:07,002 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-13 18:00:07,008 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3456 states.
[2019-10-13 18:00:07,116 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 3233.
[2019-10-13 18:00:07,116 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3233 states.
[2019-10-13 18:00:07,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4504 transitions.
[2019-10-13 18:00:07,132 INFO  L78                 Accepts]: Start accepts. Automaton has 3233 states and 4504 transitions. Word has length 120
[2019-10-13 18:00:07,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:07,133 INFO  L462      AbstractCegarLoop]: Abstraction has 3233 states and 4504 transitions.
[2019-10-13 18:00:07,133 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 18:00:07,133 INFO  L276                IsEmpty]: Start isEmpty. Operand 3233 states and 4504 transitions.
[2019-10-13 18:00:07,138 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 184
[2019-10-13 18:00:07,138 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:07,138 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:00:07,138 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:07,139 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:07,139 INFO  L82        PathProgramCache]: Analyzing trace with hash 384966816, now seen corresponding path program 1 times
[2019-10-13 18:00:07,139 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:07,139 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075718527]
[2019-10-13 18:00:07,140 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:07,140 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:07,140 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:07,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:07,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:07,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:07,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:07,423 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:00:07,424 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075718527]
[2019-10-13 18:00:07,424 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825271604]
[2019-10-13 18:00:07,424 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 18:00:07,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:07,625 INFO  L256         TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 18:00:07,639 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:07,703 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:00:07,703 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:07,704 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8
[2019-10-13 18:00:07,704 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765766355]
[2019-10-13 18:00:07,705 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 18:00:07,705 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:07,706 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 18:00:07,706 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 18:00:07,706 INFO  L87              Difference]: Start difference. First operand 3233 states and 4504 transitions. Second operand 8 states.
[2019-10-13 18:00:10,141 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:10,141 INFO  L93              Difference]: Finished difference Result 6540 states and 9941 transitions.
[2019-10-13 18:00:10,142 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-13 18:00:10,142 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 183
[2019-10-13 18:00:10,144 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:10,167 INFO  L225             Difference]: With dead ends: 6540
[2019-10-13 18:00:10,168 INFO  L226             Difference]: Without dead ends: 3313
[2019-10-13 18:00:10,181 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-13 18:00:10,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3313 states.
[2019-10-13 18:00:10,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 2993.
[2019-10-13 18:00:10,283 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2993 states.
[2019-10-13 18:00:10,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 3904 transitions.
[2019-10-13 18:00:10,299 INFO  L78                 Accepts]: Start accepts. Automaton has 2993 states and 3904 transitions. Word has length 183
[2019-10-13 18:00:10,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:10,301 INFO  L462      AbstractCegarLoop]: Abstraction has 2993 states and 3904 transitions.
[2019-10-13 18:00:10,301 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 18:00:10,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 2993 states and 3904 transitions.
[2019-10-13 18:00:10,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2019-10-13 18:00:10,306 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:10,308 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:00:10,511 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:10,512 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:10,512 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:10,513 INFO  L82        PathProgramCache]: Analyzing trace with hash 1968960108, now seen corresponding path program 1 times
[2019-10-13 18:00:10,513 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:10,513 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175410917]
[2019-10-13 18:00:10,513 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:10,514 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:10,514 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:10,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:10,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:10,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:10,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:10,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 18:00:10,809 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175410917]
[2019-10-13 18:00:10,809 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620823164]
[2019-10-13 18:00:10,809 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 18:00:10,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:10,907 INFO  L256         TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:00:10,932 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:11,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 18:00:11,050 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:11,050 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2019-10-13 18:00:11,051 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408408116]
[2019-10-13 18:00:11,051 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:00:11,052 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:11,053 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:00:11,053 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 18:00:11,053 INFO  L87              Difference]: Start difference. First operand 2993 states and 3904 transitions. Second operand 3 states.
[2019-10-13 18:00:12,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:12,098 INFO  L93              Difference]: Finished difference Result 7515 states and 10042 transitions.
[2019-10-13 18:00:12,104 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 18:00:12,105 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 193
[2019-10-13 18:00:12,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:12,129 INFO  L225             Difference]: With dead ends: 7515
[2019-10-13 18:00:12,129 INFO  L226             Difference]: Without dead ends: 4528
[2019-10-13 18:00:12,138 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 18:00:12,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4528 states.
[2019-10-13 18:00:12,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 4528.
[2019-10-13 18:00:12,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4528 states.
[2019-10-13 18:00:12,253 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 5974 transitions.
[2019-10-13 18:00:12,254 INFO  L78                 Accepts]: Start accepts. Automaton has 4528 states and 5974 transitions. Word has length 193
[2019-10-13 18:00:12,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:12,254 INFO  L462      AbstractCegarLoop]: Abstraction has 4528 states and 5974 transitions.
[2019-10-13 18:00:12,255 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 18:00:12,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 4528 states and 5974 transitions.
[2019-10-13 18:00:12,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2019-10-13 18:00:12,260 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:12,261 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:00:12,464 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:12,465 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:12,465 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:12,466 INFO  L82        PathProgramCache]: Analyzing trace with hash 1007038762, now seen corresponding path program 1 times
[2019-10-13 18:00:12,466 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:12,466 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614558682]
[2019-10-13 18:00:12,467 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:12,467 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:12,467 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:12,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:12,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:12,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:12,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:12,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 140 backedges. 102 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:00:12,941 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614558682]
[2019-10-13 18:00:12,942 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282225390]
[2019-10-13 18:00:12,943 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 18:00:13,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:13,046 INFO  L256         TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 18:00:13,051 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:13,109 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-13 18:00:13,194 INFO  L134       CoverageAnalysis]: Checked inductivity of 140 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2019-10-13 18:00:13,194 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:13,194 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13
[2019-10-13 18:00:13,195 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870617591]
[2019-10-13 18:00:13,196 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:00:13,196 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:13,196 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:00:13,196 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2019-10-13 18:00:13,197 INFO  L87              Difference]: Start difference. First operand 4528 states and 5974 transitions. Second operand 5 states.
[2019-10-13 18:00:14,789 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:14,789 INFO  L93              Difference]: Finished difference Result 9113 states and 12144 transitions.
[2019-10-13 18:00:14,790 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:00:14,790 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 215
[2019-10-13 18:00:14,790 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:14,812 INFO  L225             Difference]: With dead ends: 9113
[2019-10-13 18:00:14,813 INFO  L226             Difference]: Without dead ends: 4591
[2019-10-13 18:00:14,826 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2019-10-13 18:00:14,832 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4591 states.
[2019-10-13 18:00:14,990 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4548.
[2019-10-13 18:00:14,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4548 states.
[2019-10-13 18:00:15,000 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6010 transitions.
[2019-10-13 18:00:15,001 INFO  L78                 Accepts]: Start accepts. Automaton has 4548 states and 6010 transitions. Word has length 215
[2019-10-13 18:00:15,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:15,001 INFO  L462      AbstractCegarLoop]: Abstraction has 4548 states and 6010 transitions.
[2019-10-13 18:00:15,001 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:00:15,001 INFO  L276                IsEmpty]: Start isEmpty. Operand 4548 states and 6010 transitions.
[2019-10-13 18:00:15,008 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 268
[2019-10-13 18:00:15,008 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:15,009 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:00:15,221 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:15,222 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:15,222 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:15,222 INFO  L82        PathProgramCache]: Analyzing trace with hash -1219984608, now seen corresponding path program 1 times
[2019-10-13 18:00:15,223 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:15,223 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311153634]
[2019-10-13 18:00:15,223 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:15,224 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:15,224 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:15,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:15,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:15,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:15,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:15,515 INFO  L134       CoverageAnalysis]: Checked inductivity of 167 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2019-10-13 18:00:15,516 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311153634]
[2019-10-13 18:00:15,516 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587638548]
[2019-10-13 18:00:15,516 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 18:00:15,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:15,616 INFO  L256         TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-10-13 18:00:15,622 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:15,660 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:15,661 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:15,663 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:15,667 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:15,668 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:15,671 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:15,674 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:15,674 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:00:17,816 WARN  L191               SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 59 DAG size of output: 21
[2019-10-13 18:00:20,090 INFO  L134       CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2019-10-13 18:00:20,091 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:20,091 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2019-10-13 18:00:20,091 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504690968]
[2019-10-13 18:00:20,092 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-10-13 18:00:20,092 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:20,092 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-10-13 18:00:20,093 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=59, Unknown=1, NotChecked=0, Total=90
[2019-10-13 18:00:20,093 INFO  L87              Difference]: Start difference. First operand 4548 states and 6010 transitions. Second operand 10 states.