java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label23.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:05:18,439 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-13 18:05:18,524 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-13 18:05:18,541 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:05:18,541 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:05:18,543 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:05:18,543 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:05:18,543 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:05:18,543 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:05:18,543 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:05:18,544 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:05:18,544 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:05:18,544 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:05:18,544 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:05:18,545 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:05:18,545 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:05:18,545 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:05:18,545 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:05:18,545 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:05:18,546 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:05:18,546 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:05:18,547 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:05:18,548 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:05:18,548 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:05:18,548 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:05:18,548 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:05:18,549 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:05:18,549 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:05:18,549 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:05:18,549 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:05:18,549 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:05:18,550 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:05:18,846 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:05:18,861 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:05:18,865 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:05:18,867 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:05:18,867 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:05:18,868 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label23.c
[2019-10-13 18:05:18,926 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1dc46ae8/438fd8a0c6f149d381fc8e7a86a5b84a/FLAGede7ac5ac
[2019-10-13 18:05:19,560 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:05:19,561 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label23.c
[2019-10-13 18:05:19,581 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1dc46ae8/438fd8a0c6f149d381fc8e7a86a5b84a/FLAGede7ac5ac
[2019-10-13 18:05:19,773 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1dc46ae8/438fd8a0c6f149d381fc8e7a86a5b84a
[2019-10-13 18:05:19,783 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:05:19,785 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:05:19,786 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:05:19,786 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:05:19,790 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:05:19,791 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:05:19" (1/1) ...
[2019-10-13 18:05:19,793 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac9320a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:19, skipping insertion in model container
[2019-10-13 18:05:19,794 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:05:19" (1/1) ...
[2019-10-13 18:05:19,801 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:05:19,877 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:05:20,716 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:05:20,728 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:05:21,075 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:05:21,098 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:05:21,099 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21 WrapperNode
[2019-10-13 18:05:21,100 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:05:21,101 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:05:21,101 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:05:21,101 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:05:21,117 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
[2019-10-13 18:05:21,118 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
[2019-10-13 18:05:21,163 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
[2019-10-13 18:05:21,164 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
[2019-10-13 18:05:21,237 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
[2019-10-13 18:05:21,268 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
[2019-10-13 18:05:21,285 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
[2019-10-13 18:05:21,299 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:05:21,300 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:05:21,300 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:05:21,300 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:05:21,302 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:05:21,361 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:05:21,361 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:05:21,362 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:05:21,362 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-13 18:05:21,362 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:05:21,362 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:05:21,362 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-13 18:05:21,363 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:05:21,363 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:05:21,363 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:05:21,363 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:05:21,363 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:05:21,364 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:05:23,697 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:05:23,697 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:05:23,702 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:05:23 BoogieIcfgContainer
[2019-10-13 18:05:23,702 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:05:23,704 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:05:23,704 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:05:23,707 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:05:23,707 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:05:19" (1/3) ...
[2019-10-13 18:05:23,709 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bdb232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:05:23, skipping insertion in model container
[2019-10-13 18:05:23,709 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:21" (2/3) ...
[2019-10-13 18:05:23,710 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bdb232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:05:23, skipping insertion in model container
[2019-10-13 18:05:23,710 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:05:23" (3/3) ...
[2019-10-13 18:05:23,719 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem16_label23.c
[2019-10-13 18:05:23,729 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:05:23,739 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:05:23,751 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:05:23,793 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:05:23,793 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:05:23,793 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:05:23,794 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:05:23,794 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:05:23,794 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:05:23,794 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:05:23,794 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:05:23,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 409 states.
[2019-10-13 18:05:23,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2019-10-13 18:05:23,832 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:23,833 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]
[2019-10-13 18:05:23,836 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:23,842 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:23,843 INFO  L82        PathProgramCache]: Analyzing trace with hash -1421899030, now seen corresponding path program 1 times
[2019-10-13 18:05:23,851 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:23,852 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326409771]
[2019-10-13 18:05:23,852 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:23,852 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:23,853 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:23,998 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:24,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:24,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:05:24,206 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326409771]
[2019-10-13 18:05:24,207 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:05:24,208 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:05:24,208 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713012620]
[2019-10-13 18:05:24,213 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:05:24,213 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:24,226 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:05:24,227 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:05:24,229 INFO  L87              Difference]: Start difference. First operand 409 states. Second operand 5 states.
[2019-10-13 18:05:29,326 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:29,327 INFO  L93              Difference]: Finished difference Result 1515 states and 2848 transitions.
[2019-10-13 18:05:29,327 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:05:29,328 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 37
[2019-10-13 18:05:29,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:29,354 INFO  L225             Difference]: With dead ends: 1515
[2019-10-13 18:05:29,355 INFO  L226             Difference]: Without dead ends: 1038
[2019-10-13 18:05:29,367 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:05:29,386 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1038 states.
[2019-10-13 18:05:29,479 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031.
[2019-10-13 18:05:29,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1031 states.
[2019-10-13 18:05:29,491 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1642 transitions.
[2019-10-13 18:05:29,494 INFO  L78                 Accepts]: Start accepts. Automaton has 1031 states and 1642 transitions. Word has length 37
[2019-10-13 18:05:29,494 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:29,495 INFO  L462      AbstractCegarLoop]: Abstraction has 1031 states and 1642 transitions.
[2019-10-13 18:05:29,495 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:05:29,495 INFO  L276                IsEmpty]: Start isEmpty. Operand 1031 states and 1642 transitions.
[2019-10-13 18:05:29,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2019-10-13 18:05:29,507 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:29,507 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:05:29,508 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:29,508 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:29,508 INFO  L82        PathProgramCache]: Analyzing trace with hash -1804406, now seen corresponding path program 1 times
[2019-10-13 18:05:29,509 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:29,509 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160992184]
[2019-10-13 18:05:29,509 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:29,510 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:29,510 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:29,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:29,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:29,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:29,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:30,020 INFO  L134       CoverageAnalysis]: Checked inductivity of 135 backedges. 60 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 18:05:30,021 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160992184]
[2019-10-13 18:05:30,022 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885818475]
[2019-10-13 18:05:30,022 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:30,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:30,121 INFO  L256         TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:05:30,133 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:05:30,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 135 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2019-10-13 18:05:30,279 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:05:30,279 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9
[2019-10-13 18:05:30,279 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571763551]
[2019-10-13 18:05:30,284 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:05:30,284 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:30,284 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:05:30,285 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:05:30,285 INFO  L87              Difference]: Start difference. First operand 1031 states and 1642 transitions. Second operand 5 states.
[2019-10-13 18:05:33,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:33,641 INFO  L93              Difference]: Finished difference Result 3129 states and 5063 transitions.
[2019-10-13 18:05:33,641 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 18:05:33,642 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 219
[2019-10-13 18:05:33,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:33,663 INFO  L225             Difference]: With dead ends: 3129
[2019-10-13 18:05:33,664 INFO  L226             Difference]: Without dead ends: 2104
[2019-10-13 18:05:33,669 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:05:33,672 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2104 states.
[2019-10-13 18:05:33,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2083.
[2019-10-13 18:05:33,758 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2083 states.
[2019-10-13 18:05:33,775 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3188 transitions.
[2019-10-13 18:05:33,775 INFO  L78                 Accepts]: Start accepts. Automaton has 2083 states and 3188 transitions. Word has length 219
[2019-10-13 18:05:33,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:33,778 INFO  L462      AbstractCegarLoop]: Abstraction has 2083 states and 3188 transitions.
[2019-10-13 18:05:33,779 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:05:33,779 INFO  L276                IsEmpty]: Start isEmpty. Operand 2083 states and 3188 transitions.
[2019-10-13 18:05:33,792 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2019-10-13 18:05:33,792 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:33,792 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:05:33,998 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:33,998 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:33,999 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:33,999 INFO  L82        PathProgramCache]: Analyzing trace with hash -1691795333, now seen corresponding path program 1 times
[2019-10-13 18:05:34,000 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:34,001 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933481055]
[2019-10-13 18:05:34,001 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:34,001 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:34,002 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:34,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:34,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:34,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:34,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:34,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 60 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 18:05:34,389 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933481055]
[2019-10-13 18:05:34,395 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344024808]
[2019-10-13 18:05:34,395 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:34,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:34,481 INFO  L256         TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:05:34,488 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:05:34,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2019-10-13 18:05:34,564 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:05:34,564 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 18:05:34,565 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223977120]
[2019-10-13 18:05:34,566 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:05:34,566 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:34,567 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:05:34,567 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:05:34,567 INFO  L87              Difference]: Start difference. First operand 2083 states and 3188 transitions. Second operand 5 states.
[2019-10-13 18:05:37,781 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:37,781 INFO  L93              Difference]: Finished difference Result 6311 states and 9957 transitions.
[2019-10-13 18:05:37,786 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 18:05:37,786 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 226
[2019-10-13 18:05:37,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:37,815 INFO  L225             Difference]: With dead ends: 6311
[2019-10-13 18:05:37,815 INFO  L226             Difference]: Without dead ends: 4234
[2019-10-13 18:05:37,822 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:05:37,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4234 states.
[2019-10-13 18:05:37,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4198.
[2019-10-13 18:05:37,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4198 states.
[2019-10-13 18:05:37,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 5792 transitions.
[2019-10-13 18:05:37,968 INFO  L78                 Accepts]: Start accepts. Automaton has 4198 states and 5792 transitions. Word has length 226
[2019-10-13 18:05:37,970 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:37,970 INFO  L462      AbstractCegarLoop]: Abstraction has 4198 states and 5792 transitions.
[2019-10-13 18:05:37,970 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:05:37,970 INFO  L276                IsEmpty]: Start isEmpty. Operand 4198 states and 5792 transitions.
[2019-10-13 18:05:37,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 267
[2019-10-13 18:05:37,975 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:37,976 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:05:38,181 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:38,182 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:38,182 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:38,182 INFO  L82        PathProgramCache]: Analyzing trace with hash 2080665419, now seen corresponding path program 1 times
[2019-10-13 18:05:38,183 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:38,183 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093979253]
[2019-10-13 18:05:38,183 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:38,183 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:38,183 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:38,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:38,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:38,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:38,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:38,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 151 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-13 18:05:38,732 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093979253]
[2019-10-13 18:05:38,732 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504066928]
[2019-10-13 18:05:38,732 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 18:05:38,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:38,823 INFO  L256         TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:05:38,829 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:05:38,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:05:38,940 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:05:38,940 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-10-13 18:05:38,941 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983072673]
[2019-10-13 18:05:38,943 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-13 18:05:38,943 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:38,943 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-13 18:05:38,944 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:05:38,944 INFO  L87              Difference]: Start difference. First operand 4198 states and 5792 transitions. Second operand 12 states.
[2019-10-13 18:05:46,983 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:46,984 INFO  L93              Difference]: Finished difference Result 13272 states and 19295 transitions.
[2019-10-13 18:05:46,984 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2019-10-13 18:05:46,984 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 266
[2019-10-13 18:05:46,986 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:47,020 INFO  L225             Difference]: With dead ends: 13272
[2019-10-13 18:05:47,020 INFO  L226             Difference]: Without dead ends: 7642
[2019-10-13 18:05:47,036 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122
[2019-10-13 18:05:47,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7642 states.
[2019-10-13 18:05:47,203 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7642 to 6236.
[2019-10-13 18:05:47,204 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6236 states.
[2019-10-13 18:05:47,219 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 7162 transitions.
[2019-10-13 18:05:47,219 INFO  L78                 Accepts]: Start accepts. Automaton has 6236 states and 7162 transitions. Word has length 266
[2019-10-13 18:05:47,221 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:47,221 INFO  L462      AbstractCegarLoop]: Abstraction has 6236 states and 7162 transitions.
[2019-10-13 18:05:47,222 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-10-13 18:05:47,222 INFO  L276                IsEmpty]: Start isEmpty. Operand 6236 states and 7162 transitions.
[2019-10-13 18:05:47,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 536
[2019-10-13 18:05:47,239 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:47,239 INFO  L380         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:05:47,452 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:47,452 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:47,453 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:47,453 INFO  L82        PathProgramCache]: Analyzing trace with hash 498012538, now seen corresponding path program 1 times
[2019-10-13 18:05:47,454 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:47,455 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792748244]
[2019-10-13 18:05:47,455 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:47,455 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:47,455 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:47,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:47,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:47,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:47,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:47,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:47,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:48,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 815 backedges. 120 proven. 345 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2019-10-13 18:05:48,222 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792748244]
[2019-10-13 18:05:48,222 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731194330]
[2019-10-13 18:05:48,222 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 18:05:48,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:48,377 INFO  L256         TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:05:48,387 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:05:48,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 815 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2019-10-13 18:05:48,617 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:05:48,618 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 18:05:48,618 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875999652]
[2019-10-13 18:05:48,619 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:05:48,619 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:48,619 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:05:48,619 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:05:48,620 INFO  L87              Difference]: Start difference. First operand 6236 states and 7162 transitions. Second operand 5 states.
[2019-10-13 18:05:50,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:50,260 INFO  L93              Difference]: Finished difference Result 13846 states and 15934 transitions.
[2019-10-13 18:05:50,261 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-13 18:05:50,261 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 535
[2019-10-13 18:05:50,262 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:50,292 INFO  L225             Difference]: With dead ends: 13846
[2019-10-13 18:05:50,292 INFO  L226             Difference]: Without dead ends: 7616
[2019-10-13 18:05:50,307 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 539 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:05:50,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7616 states.
[2019-10-13 18:05:50,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7616 to 7598.
[2019-10-13 18:05:50,465 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7598 states.
[2019-10-13 18:05:50,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 8435 transitions.
[2019-10-13 18:05:50,480 INFO  L78                 Accepts]: Start accepts. Automaton has 7598 states and 8435 transitions. Word has length 535
[2019-10-13 18:05:50,480 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:50,482 INFO  L462      AbstractCegarLoop]: Abstraction has 7598 states and 8435 transitions.
[2019-10-13 18:05:50,483 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:05:50,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 7598 states and 8435 transitions.
[2019-10-13 18:05:50,507 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 650
[2019-10-13 18:05:50,508 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:50,508 INFO  L380         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:05:50,712 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:50,712 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:50,712 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:50,712 INFO  L82        PathProgramCache]: Analyzing trace with hash -1537283146, now seen corresponding path program 1 times
[2019-10-13 18:05:50,713 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:50,713 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542302383]
[2019-10-13 18:05:50,713 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:50,713 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:50,713 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:50,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:50,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:50,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:51,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:51,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:51,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:51,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 818 backedges. 240 proven. 221 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked.
[2019-10-13 18:05:51,708 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542302383]
[2019-10-13 18:05:51,709 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773581445]
[2019-10-13 18:05:51,709 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:05:51,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:51,887 INFO  L256         TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:05:51,904 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:05:52,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 818 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked.
[2019-10-13 18:05:52,269 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:05:52,269 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-13 18:05:52,270 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066259329]
[2019-10-13 18:05:52,271 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 18:05:52,271 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:52,271 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 18:05:52,272 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:05:52,272 INFO  L87              Difference]: Start difference. First operand 7598 states and 8435 transitions. Second operand 11 states.