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_label38.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 21:59:31,845 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 21:59:31,847 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-14 21:59:31,904 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-14 21:59:31,927 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 21:59:31,927 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 21:59:31,929 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 21:59:31,929 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 21:59:31,929 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 21:59:31,929 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 21:59:31,930 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 21:59:31,930 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 21:59:31,930 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 21:59:31,930 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 21:59:31,931 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 21:59:31,932 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 21:59:31,932 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 21:59:31,932 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 21:59:31,932 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 21:59:31,933 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 21:59:31,933 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 21:59:31,933 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 21:59:31,933 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 21:59:31,934 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 21:59:31,934 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 21:59:31,934 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:59:31,935 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 21:59:31,935 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 21:59:31,935 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 21:59:31,935 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 21:59:31,935 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 21:59:31,936 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 21:59:31,936 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 21:59:32,250 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 21:59:32,266 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 21:59:32,269 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 21:59:32,270 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 21:59:32,271 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 21:59:32,272 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label38.c
[2019-10-14 21:59:32,344 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1696f2a35/761e800edbde4ac3985521084424e475/FLAG4bd85b1b3
[2019-10-14 21:59:32,949 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 21:59:32,951 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label38.c
[2019-10-14 21:59:32,972 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1696f2a35/761e800edbde4ac3985521084424e475/FLAG4bd85b1b3
[2019-10-14 21:59:33,242 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1696f2a35/761e800edbde4ac3985521084424e475
[2019-10-14 21:59:33,251 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 21:59:33,252 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 21:59:33,253 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 21:59:33,254 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 21:59:33,257 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 21:59:33,258 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:33" (1/1) ...
[2019-10-14 21:59:33,261 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d80721f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:33, skipping insertion in model container
[2019-10-14 21:59:33,261 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:33" (1/1) ...
[2019-10-14 21:59:33,269 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 21:59:33,322 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 21:59:34,013 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:59:34,022 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 21:59:34,259 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:59:34,280 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 21:59:34,281 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34 WrapperNode
[2019-10-14 21:59:34,282 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 21:59:34,282 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 21:59:34,283 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 21:59:34,283 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 21:59:34,299 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
[2019-10-14 21:59:34,299 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
[2019-10-14 21:59:34,339 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
[2019-10-14 21:59:34,340 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
[2019-10-14 21:59:34,413 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
[2019-10-14 21:59:34,425 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
[2019-10-14 21:59:34,437 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
[2019-10-14 21:59:34,451 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 21:59:34,452 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 21:59:34,452 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 21:59:34,452 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 21:59:34,453 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:59:34,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 21:59:34,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 21:59:34,523 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 21:59:34,524 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 21:59:34,524 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 21:59:34,524 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 21:59:34,524 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 21:59:34,524 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 21:59:34,525 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 21:59:34,525 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 21:59:34,525 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 21:59:36,374 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 21:59:36,375 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 21:59:36,377 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:36 BoogieIcfgContainer
[2019-10-14 21:59:36,377 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 21:59:36,379 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 21:59:36,380 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 21:59:36,383 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 21:59:36,384 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:59:33" (1/3) ...
[2019-10-14 21:59:36,385 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e61a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:36, skipping insertion in model container
[2019-10-14 21:59:36,385 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:34" (2/3) ...
[2019-10-14 21:59:36,386 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e61a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:36, skipping insertion in model container
[2019-10-14 21:59:36,387 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:36" (3/3) ...
[2019-10-14 21:59:36,397 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem11_label38.c
[2019-10-14 21:59:36,411 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 21:59:36,423 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 21:59:36,436 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 21:59:36,488 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 21:59:36,488 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 21:59:36,489 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 21:59:36,490 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 21:59:36,490 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 21:59:36,490 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 21:59:36,490 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 21:59:36,490 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 21:59:36,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2019-10-14 21:59:36,542 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2019-10-14 21:59:36,542 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:36,544 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:36,546 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:36,552 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:36,553 INFO  L82        PathProgramCache]: Analyzing trace with hash 1782601651, now seen corresponding path program 1 times
[2019-10-14 21:59:36,564 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:36,565 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66693454]
[2019-10-14 21:59:36,566 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:36,566 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:36,566 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:36,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:37,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:37,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:37,141 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66693454]
[2019-10-14 21:59:37,142 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:59:37,143 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 21:59:37,143 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439777352]
[2019-10-14 21:59:37,148 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:59:37,149 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:37,164 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:59:37,165 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 21:59:37,168 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 5 states.
[2019-10-14 21:59:40,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:40,377 INFO  L93              Difference]: Finished difference Result 998 states and 1793 transitions.
[2019-10-14 21:59:40,378 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 21:59:40,380 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 66
[2019-10-14 21:59:40,380 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:40,421 INFO  L225             Difference]: With dead ends: 998
[2019-10-14 21:59:40,421 INFO  L226             Difference]: Without dead ends: 638
[2019-10-14 21:59:40,438 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
[2019-10-14 21:59:40,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 638 states.
[2019-10-14 21:59:40,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 621.
[2019-10-14 21:59:40,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 621 states.
[2019-10-14 21:59:40,553 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 950 transitions.
[2019-10-14 21:59:40,554 INFO  L78                 Accepts]: Start accepts. Automaton has 621 states and 950 transitions. Word has length 66
[2019-10-14 21:59:40,555 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:40,555 INFO  L462      AbstractCegarLoop]: Abstraction has 621 states and 950 transitions.
[2019-10-14 21:59:40,555 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:59:40,555 INFO  L276                IsEmpty]: Start isEmpty. Operand 621 states and 950 transitions.
[2019-10-14 21:59:40,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2019-10-14 21:59:40,563 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:40,564 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:40,564 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:40,564 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:40,565 INFO  L82        PathProgramCache]: Analyzing trace with hash -271473866, now seen corresponding path program 1 times
[2019-10-14 21:59:40,565 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:40,565 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346012609]
[2019-10-14 21:59:40,565 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:40,566 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:40,566 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:40,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:40,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:40,971 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346012609]
[2019-10-14 21:59:40,972 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:59:40,972 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-14 21:59:40,972 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973486078]
[2019-10-14 21:59:40,976 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 21:59:40,977 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:40,977 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 21:59:40,977 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:59:40,978 INFO  L87              Difference]: Start difference. First operand 621 states and 950 transitions. Second operand 8 states.
[2019-10-14 21:59:44,787 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:44,787 INFO  L93              Difference]: Finished difference Result 2487 states and 4246 transitions.
[2019-10-14 21:59:44,787 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-14 21:59:44,788 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 136
[2019-10-14 21:59:44,788 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:44,811 INFO  L225             Difference]: With dead ends: 2487
[2019-10-14 21:59:44,811 INFO  L226             Difference]: Without dead ends: 1872
[2019-10-14 21:59:44,816 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2019-10-14 21:59:44,819 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1872 states.
[2019-10-14 21:59:44,950 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1816.
[2019-10-14 21:59:44,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1816 states.
[2019-10-14 21:59:44,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2597 transitions.
[2019-10-14 21:59:44,962 INFO  L78                 Accepts]: Start accepts. Automaton has 1816 states and 2597 transitions. Word has length 136
[2019-10-14 21:59:44,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:44,965 INFO  L462      AbstractCegarLoop]: Abstraction has 1816 states and 2597 transitions.
[2019-10-14 21:59:44,965 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-14 21:59:44,965 INFO  L276                IsEmpty]: Start isEmpty. Operand 1816 states and 2597 transitions.
[2019-10-14 21:59:44,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-10-14 21:59:44,981 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:44,981 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:44,981 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:44,982 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:44,982 INFO  L82        PathProgramCache]: Analyzing trace with hash 1985877122, now seen corresponding path program 1 times
[2019-10-14 21:59:44,982 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:44,985 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172102034]
[2019-10-14 21:59:44,985 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:44,985 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:44,985 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:45,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:45,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:45,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:45,285 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:45,286 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172102034]
[2019-10-14 21:59:45,286 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:59:45,286 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-14 21:59:45,287 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297289226]
[2019-10-14 21:59:45,287 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 21:59:45,288 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:45,288 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 21:59:45,288 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:59:45,288 INFO  L87              Difference]: Start difference. First operand 1816 states and 2597 transitions. Second operand 8 states.
[2019-10-14 21:59:48,271 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:48,271 INFO  L93              Difference]: Finished difference Result 5266 states and 7935 transitions.
[2019-10-14 21:59:48,272 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-14 21:59:48,279 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 146
[2019-10-14 21:59:48,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:48,308 INFO  L225             Difference]: With dead ends: 5266
[2019-10-14 21:59:48,309 INFO  L226             Difference]: Without dead ends: 3456
[2019-10-14 21:59:48,317 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
[2019-10-14 21:59:48,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3456 states.
[2019-10-14 21:59:48,430 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 3233.
[2019-10-14 21:59:48,431 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3233 states.
[2019-10-14 21:59:48,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4503 transitions.
[2019-10-14 21:59:48,448 INFO  L78                 Accepts]: Start accepts. Automaton has 3233 states and 4503 transitions. Word has length 146
[2019-10-14 21:59:48,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:48,450 INFO  L462      AbstractCegarLoop]: Abstraction has 3233 states and 4503 transitions.
[2019-10-14 21:59:48,451 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-14 21:59:48,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 3233 states and 4503 transitions.
[2019-10-14 21:59:48,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2019-10-14 21:59:48,459 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:48,459 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:48,459 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:48,460 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:48,460 INFO  L82        PathProgramCache]: Analyzing trace with hash -1482166744, now seen corresponding path program 1 times
[2019-10-14 21:59:48,460 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:48,460 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794694037]
[2019-10-14 21:59:48,460 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:48,461 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:48,461 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:48,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:48,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:48,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:48,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:48,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-14 21:59:48,799 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794694037]
[2019-10-14 21:59:48,799 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937778527]
[2019-10-14 21:59:48,799 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:48,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:48,921 INFO  L256         TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-14 21:59:48,934 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:49,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:59:49,054 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 21:59:49,054 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8
[2019-10-14 21:59:49,054 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294793239]
[2019-10-14 21:59:49,055 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 21:59:49,055 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:49,056 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 21:59:49,056 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:59:49,056 INFO  L87              Difference]: Start difference. First operand 3233 states and 4503 transitions. Second operand 8 states.
[2019-10-14 21:59:51,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:51,582 INFO  L93              Difference]: Finished difference Result 6540 states and 9940 transitions.
[2019-10-14 21:59:51,583 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-14 21:59:51,583 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 209
[2019-10-14 21:59:51,584 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:51,609 INFO  L225             Difference]: With dead ends: 6540
[2019-10-14 21:59:51,609 INFO  L226             Difference]: Without dead ends: 3313
[2019-10-14 21:59:51,623 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-14 21:59:51,626 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3313 states.
[2019-10-14 21:59:51,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 2993.
[2019-10-14 21:59:51,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2993 states.
[2019-10-14 21:59:51,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 3904 transitions.
[2019-10-14 21:59:51,732 INFO  L78                 Accepts]: Start accepts. Automaton has 2993 states and 3904 transitions. Word has length 209
[2019-10-14 21:59:51,734 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:51,734 INFO  L462      AbstractCegarLoop]: Abstraction has 2993 states and 3904 transitions.
[2019-10-14 21:59:51,734 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-14 21:59:51,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 2993 states and 3904 transitions.
[2019-10-14 21:59:51,739 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2019-10-14 21:59:51,739 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:51,740 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-14 21:59:51,944 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:51,944 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:51,944 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:51,945 INFO  L82        PathProgramCache]: Analyzing trace with hash -1232021260, now seen corresponding path program 1 times
[2019-10-14 21:59:51,945 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:51,945 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690444463]
[2019-10-14 21:59:51,946 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:51,946 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:51,946 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:52,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:52,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:52,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:52,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:52,229 INFO  L134       CoverageAnalysis]: Checked inductivity of 191 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:59:52,230 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690444463]
[2019-10-14 21:59:52,230 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547833491]
[2019-10-14 21:59:52,230 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:52,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:52,320 INFO  L256         TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:59:52,327 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:52,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:59:52,437 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:52,437 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2019-10-14 21:59:52,437 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638114267]
[2019-10-14 21:59:52,438 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:59:52,438 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:52,439 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:59:52,439 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:59:52,439 INFO  L87              Difference]: Start difference. First operand 2993 states and 3904 transitions. Second operand 3 states.
[2019-10-14 21:59:53,503 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:53,503 INFO  L93              Difference]: Finished difference Result 7515 states and 10042 transitions.
[2019-10-14 21:59:53,503 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:59:53,503 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 219
[2019-10-14 21:59:53,504 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:53,529 INFO  L225             Difference]: With dead ends: 7515
[2019-10-14 21:59:53,529 INFO  L226             Difference]: Without dead ends: 4528
[2019-10-14 21:59:53,538 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:59:53,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4528 states.
[2019-10-14 21:59:53,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 4528.
[2019-10-14 21:59:53,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4528 states.
[2019-10-14 21:59:53,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 5974 transitions.
[2019-10-14 21:59:53,652 INFO  L78                 Accepts]: Start accepts. Automaton has 4528 states and 5974 transitions. Word has length 219
[2019-10-14 21:59:53,652 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:53,653 INFO  L462      AbstractCegarLoop]: Abstraction has 4528 states and 5974 transitions.
[2019-10-14 21:59:53,654 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:59:53,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 4528 states and 5974 transitions.
[2019-10-14 21:59:53,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 242
[2019-10-14 21:59:53,667 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:53,667 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:53,872 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:53,872 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:53,872 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:53,873 INFO  L82        PathProgramCache]: Analyzing trace with hash 495099250, now seen corresponding path program 1 times
[2019-10-14 21:59:53,873 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:53,874 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112718830]
[2019-10-14 21:59:53,874 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:53,874 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:53,874 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:53,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:54,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:54,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:54,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:54,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-14 21:59:54,259 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112718830]
[2019-10-14 21:59:54,259 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987325722]
[2019-10-14 21:59:54,259 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:54,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:54,402 INFO  L256         TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-14 21:59:54,410 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:54,465 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-14 21:59:54,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2019-10-14 21:59:54,574 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:59:54,574 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2019-10-14 21:59:54,574 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041287649]
[2019-10-14 21:59:54,575 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:59:54,575 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:59:54,575 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:59:54,576 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2019-10-14 21:59:54,576 INFO  L87              Difference]: Start difference. First operand 4528 states and 5974 transitions. Second operand 5 states.
[2019-10-14 21:59:56,073 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:59:56,074 INFO  L93              Difference]: Finished difference Result 9113 states and 12144 transitions.
[2019-10-14 21:59:56,075 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 21:59:56,075 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 241
[2019-10-14 21:59:56,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:59:56,141 INFO  L225             Difference]: With dead ends: 9113
[2019-10-14 21:59:56,142 INFO  L226             Difference]: Without dead ends: 4591
[2019-10-14 21:59:56,152 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2019-10-14 21:59:56,157 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4591 states.
[2019-10-14 21:59:56,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4548.
[2019-10-14 21:59:56,256 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4548 states.
[2019-10-14 21:59:56,266 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6010 transitions.
[2019-10-14 21:59:56,267 INFO  L78                 Accepts]: Start accepts. Automaton has 4548 states and 6010 transitions. Word has length 241
[2019-10-14 21:59:56,267 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:59:56,267 INFO  L462      AbstractCegarLoop]: Abstraction has 4548 states and 6010 transitions.
[2019-10-14 21:59:56,267 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:59:56,267 INFO  L276                IsEmpty]: Start isEmpty. Operand 4548 states and 6010 transitions.
[2019-10-14 21:59:56,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 294
[2019-10-14 21:59:56,276 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:59:56,277 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:59:56,484 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:56,485 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:59:56,485 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:59:56,485 INFO  L82        PathProgramCache]: Analyzing trace with hash 1895970792, now seen corresponding path program 1 times
[2019-10-14 21:59:56,485 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:59:56,485 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603163733]
[2019-10-14 21:59:56,486 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:56,486 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:59:56,486 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:59:56,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:56,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:56,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:56,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:56,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2019-10-14 21:59:56,911 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603163733]
[2019-10-14 21:59:56,911 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158507554]
[2019-10-14 21:59:56,911 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:59:57,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:59:57,012 INFO  L256         TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-10-14 21:59:57,018 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:59:57,042 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 21:59:57,044 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 21:59:57,045 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 21:59:57,048 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 21:59:57,049 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 21:59:57,051 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 21:59:57,054 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 21:59:57,055 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-14 22:00:03,251 WARN  L191               SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 59 DAG size of output: 21
[2019-10-14 22:00:03,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2019-10-14 22:00:03,405 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:00:03,405 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11
[2019-10-14 22:00:03,405 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066528689]
[2019-10-14 22:00:03,406 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-14 22:00:03,406 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:03,406 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-14 22:00:03,407 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=74, Unknown=2, NotChecked=0, Total=110
[2019-10-14 22:00:03,407 INFO  L87              Difference]: Start difference. First operand 4548 states and 6010 transitions. Second operand 11 states.