java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:38:52,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:38:52,317 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:38:52,329 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:38:52,330 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:38:52,331 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:38:52,332 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:38:52,334 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:38:52,336 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:38:52,337 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:38:52,337 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:38:52,338 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:38:52,339 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:38:52,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:38:52,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:38:52,345 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:38:52,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:38:52,351 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:38:52,355 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:38:52,357 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:38:52,358 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:38:52,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:38:52,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:38:52,369 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:38:52,369 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:38:52,370 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:38:52,374 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:38:52,375 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:38:52,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:38:52,378 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:38:52,378 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:38:52,379 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:38:52,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:38:52,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:38:52,380 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:38:52,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:38:52,381 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:38:52,409 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:38:52,409 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:38:52,414 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:38:52,415 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:38:52,415 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:38:52,415 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:38:52,415 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:38:52,415 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:38:52,416 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:38:52,416 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:38:52,416 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:38:52,418 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:38:52,418 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:38:52,418 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:38:52,418 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:38:52,419 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:38:52,419 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:38:52,419 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:38:52,419 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:38:52,421 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:38:52,421 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:38:52,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:38:52,422 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:38:52,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:38:52,422 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:38:52,423 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:38:52,423 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:38:52,423 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:38:52,423 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:38:52,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:38:52,423 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:38:52,424 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:38:52,424 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:38:52,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:38:52,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:38:52,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:38:52,515 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:38:52,515 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:38:52,516 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-09-14 17:38:52,860 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fc72fbf/46aa975860cf482197a2f5194aaaba26/FLAGd1a2b335f [2018-09-14 17:38:53,117 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:38:53,120 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label17_true-unreach-call_false-termination.c [2018-09-14 17:38:53,140 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fc72fbf/46aa975860cf482197a2f5194aaaba26/FLAGd1a2b335f [2018-09-14 17:38:53,157 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fc72fbf/46aa975860cf482197a2f5194aaaba26 [2018-09-14 17:38:53,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:38:53,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:38:53,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:38:53,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:38:53,181 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:38:53,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:38:53" (1/1) ... [2018-09-14 17:38:53,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58150d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:53, skipping insertion in model container [2018-09-14 17:38:53,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:38:53" (1/1) ... [2018-09-14 17:38:53,199 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:38:53,828 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:38:53,846 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:38:54,001 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:38:54,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54 WrapperNode [2018-09-14 17:38:54,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:38:54,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:38:54,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:38:54,067 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:38:54,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:38:54,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:38:54,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:38:54,208 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:38:54,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (1/1) ... [2018-09-14 17:38:54,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:38:54,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:38:54,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:38:54,531 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:38:54,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (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 [2018-09-14 17:38:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:38:54,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:38:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:38:54,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:38:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:38:54,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:38:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:38:54,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:38:58,372 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:38:58,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:38:58 BoogieIcfgContainer [2018-09-14 17:38:58,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:38:58,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:38:58,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:38:58,377 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:38:58,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:38:53" (1/3) ... [2018-09-14 17:38:58,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6473ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:38:58, skipping insertion in model container [2018-09-14 17:38:58,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:38:54" (2/3) ... [2018-09-14 17:38:58,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6473ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:38:58, skipping insertion in model container [2018-09-14 17:38:58,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:38:58" (3/3) ... [2018-09-14 17:38:58,381 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label17_true-unreach-call_false-termination.c [2018-09-14 17:38:58,391 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:38:58,402 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:38:58,454 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:38:58,455 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:38:58,455 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:38:58,456 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:38:58,456 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:38:58,456 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:38:58,457 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:38:58,457 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:38:58,457 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:38:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-14 17:38:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-14 17:38:58,501 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:58,503 INFO L376 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] [2018-09-14 17:38:58,504 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1535437935, now seen corresponding path program 1 times [2018-09-14 17:38:58,512 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:58,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:58,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:58,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:58,562 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:38:59,030 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:38:59,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:38:59,030 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:38:59,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:38:59,053 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:38:59,054 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:38:59,057 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-09-14 17:39:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:00,883 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-09-14 17:39:00,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:39:00,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-09-14 17:39:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:00,906 INFO L225 Difference]: With dead ends: 691 [2018-09-14 17:39:00,907 INFO L226 Difference]: Without dead ends: 434 [2018-09-14 17:39:00,915 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:39:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-09-14 17:39:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-09-14 17:39:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-14 17:39:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 755 transitions. [2018-09-14 17:39:01,011 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 755 transitions. Word has length 63 [2018-09-14 17:39:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:01,012 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 755 transitions. [2018-09-14 17:39:01,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:39:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 755 transitions. [2018-09-14 17:39:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-14 17:39:01,021 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:01,021 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:01,022 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:01,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1025550080, now seen corresponding path program 1 times [2018-09-14 17:39:01,022 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:01,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:01,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:01,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:01,024 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:01,329 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:39:01,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:39:01,329 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:39:01,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:39:01,332 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:39:01,332 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:39:01,332 INFO L87 Difference]: Start difference. First operand 434 states and 755 transitions. Second operand 6 states. [2018-09-14 17:39:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:03,596 INFO L93 Difference]: Finished difference Result 1254 states and 2256 transitions. [2018-09-14 17:39:03,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:39:03,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-14 17:39:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:03,607 INFO L225 Difference]: With dead ends: 1254 [2018-09-14 17:39:03,607 INFO L226 Difference]: Without dead ends: 826 [2018-09-14 17:39:03,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:39:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-09-14 17:39:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 812. [2018-09-14 17:39:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2018-09-14 17:39:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1377 transitions. [2018-09-14 17:39:03,693 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1377 transitions. Word has length 143 [2018-09-14 17:39:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:03,694 INFO L480 AbstractCegarLoop]: Abstraction has 812 states and 1377 transitions. [2018-09-14 17:39:03,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:39:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1377 transitions. [2018-09-14 17:39:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-14 17:39:03,701 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:03,701 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:03,702 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1017512645, now seen corresponding path program 1 times [2018-09-14 17:39:03,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:03,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:03,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:03,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:03,704 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:03,954 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:39:03,954 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:39:03,954 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:39:03,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:39:03,955 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:39:03,956 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:39:03,956 INFO L87 Difference]: Start difference. First operand 812 states and 1377 transitions. Second operand 4 states. [2018-09-14 17:39:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:07,447 INFO L93 Difference]: Finished difference Result 1988 states and 3388 transitions. [2018-09-14 17:39:07,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:39:07,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-09-14 17:39:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:07,468 INFO L225 Difference]: With dead ends: 1988 [2018-09-14 17:39:07,468 INFO L226 Difference]: Without dead ends: 1182 [2018-09-14 17:39:07,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:39:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-09-14 17:39:07,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2018-09-14 17:39:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2018-09-14 17:39:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1751 transitions. [2018-09-14 17:39:07,531 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1751 transitions. Word has length 176 [2018-09-14 17:39:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:07,532 INFO L480 AbstractCegarLoop]: Abstraction has 1182 states and 1751 transitions. [2018-09-14 17:39:07,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:39:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1751 transitions. [2018-09-14 17:39:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-14 17:39:07,542 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:07,542 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:07,543 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:07,543 INFO L82 PathProgramCache]: Analyzing trace with hash -234886452, now seen corresponding path program 1 times [2018-09-14 17:39:07,543 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:07,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:07,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:07,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:07,546 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:08,087 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-09-14 17:39:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:08,413 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:39:08,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:39:08,413 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:39:08,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:39:08,414 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:39:08,414 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:39:08,414 INFO L87 Difference]: Start difference. First operand 1182 states and 1751 transitions. Second operand 6 states. [2018-09-14 17:39:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:13,154 INFO L93 Difference]: Finished difference Result 3828 states and 5913 transitions. [2018-09-14 17:39:13,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:39:13,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-09-14 17:39:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:13,172 INFO L225 Difference]: With dead ends: 3828 [2018-09-14 17:39:13,172 INFO L226 Difference]: Without dead ends: 2652 [2018-09-14 17:39:13,182 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:39:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2018-09-14 17:39:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2568. [2018-09-14 17:39:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2018-09-14 17:39:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3547 transitions. [2018-09-14 17:39:13,269 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3547 transitions. Word has length 229 [2018-09-14 17:39:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:13,270 INFO L480 AbstractCegarLoop]: Abstraction has 2568 states and 3547 transitions. [2018-09-14 17:39:13,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:39:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3547 transitions. [2018-09-14 17:39:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-14 17:39:13,284 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:13,285 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:13,285 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:13,285 INFO L82 PathProgramCache]: Analyzing trace with hash 96321352, now seen corresponding path program 1 times [2018-09-14 17:39:13,285 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:13,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:13,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:13,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:13,287 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 256 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:39:14,494 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:14,494 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:14,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:14,505 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:14,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:15,090 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:39:15,510 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:39:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 341 proven. 53 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-14 17:39:15,839 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:16,542 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-14 17:39:16,653 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:39:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 178 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:39:17,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:17,634 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:17,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:17,650 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:17,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 341 proven. 53 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-14 17:39:18,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 178 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:39:19,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:19,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 8, 8] total 26 [2018-09-14 17:39:19,315 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:19,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:39:19,316 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:39:19,317 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:39:19,317 INFO L87 Difference]: Start difference. First operand 2568 states and 3547 transitions. Second operand 15 states. [2018-09-14 17:39:19,644 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-09-14 17:39:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:27,452 INFO L93 Difference]: Finished difference Result 6362 states and 8966 transitions. [2018-09-14 17:39:27,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-14 17:39:27,452 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 413 [2018-09-14 17:39:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:27,472 INFO L225 Difference]: With dead ends: 6362 [2018-09-14 17:39:27,472 INFO L226 Difference]: Without dead ends: 3601 [2018-09-14 17:39:27,487 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1695 GetRequests, 1651 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2018-09-14 17:39:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2018-09-14 17:39:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3210. [2018-09-14 17:39:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3210 states. [2018-09-14 17:39:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4020 transitions. [2018-09-14 17:39:27,580 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4020 transitions. Word has length 413 [2018-09-14 17:39:27,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:27,580 INFO L480 AbstractCegarLoop]: Abstraction has 3210 states and 4020 transitions. [2018-09-14 17:39:27,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:39:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4020 transitions. [2018-09-14 17:39:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-14 17:39:27,597 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:27,597 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:27,597 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash -905676593, now seen corresponding path program 1 times [2018-09-14 17:39:27,598 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:27,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:27,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:27,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:27,599 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:28,159 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:39:28,982 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 17:39:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 264 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:29,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:29,982 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:29,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:29,993 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:30,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-09-14 17:39:30,429 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 168 proven. 210 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-14 17:39:30,801 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:39:30,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [19, 5] total 23 [2018-09-14 17:39:30,802 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:39:30,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:39:30,803 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:39:30,803 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:39:30,803 INFO L87 Difference]: Start difference. First operand 3210 states and 4020 transitions. Second operand 5 states. [2018-09-14 17:39:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:33,259 INFO L93 Difference]: Finished difference Result 10629 states and 13331 transitions. [2018-09-14 17:39:33,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:39:33,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 438 [2018-09-14 17:39:33,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:33,293 INFO L225 Difference]: With dead ends: 10629 [2018-09-14 17:39:33,293 INFO L226 Difference]: Without dead ends: 7425 [2018-09-14 17:39:33,311 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 870 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:39:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2018-09-14 17:39:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7305. [2018-09-14 17:39:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7305 states. [2018-09-14 17:39:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 8870 transitions. [2018-09-14 17:39:33,479 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 8870 transitions. Word has length 438 [2018-09-14 17:39:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:33,480 INFO L480 AbstractCegarLoop]: Abstraction has 7305 states and 8870 transitions. [2018-09-14 17:39:33,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:39:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 8870 transitions. [2018-09-14 17:39:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-09-14 17:39:33,514 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:33,515 INFO L376 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, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:33,515 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1393559433, now seen corresponding path program 1 times [2018-09-14 17:39:33,516 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:33,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:33,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:33,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:33,517 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 456 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-14 17:39:34,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:34,373 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:34,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:34,383 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:34,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 723 proven. 2 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-09-14 17:39:34,731 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 456 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-14 17:39:35,533 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:35,533 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:35,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:35,549 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:35,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 719 proven. 6 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-09-14 17:39:35,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 456 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-14 17:39:36,595 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:36,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 8 [2018-09-14 17:39:36,595 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:36,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:39:36,597 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:39:36,597 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:39:36,597 INFO L87 Difference]: Start difference. First operand 7305 states and 8870 transitions. Second operand 7 states. [2018-09-14 17:39:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:39,354 INFO L93 Difference]: Finished difference Result 17860 states and 22038 transitions. [2018-09-14 17:39:39,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:39:39,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2018-09-14 17:39:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:39,402 INFO L225 Difference]: With dead ends: 17860 [2018-09-14 17:39:39,402 INFO L226 Difference]: Without dead ends: 10561 [2018-09-14 17:39:39,444 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2215 GetRequests, 2193 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:39:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10561 states. [2018-09-14 17:39:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10561 to 10378. [2018-09-14 17:39:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10378 states. [2018-09-14 17:39:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 11971 transitions. [2018-09-14 17:39:39,672 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 11971 transitions. Word has length 549 [2018-09-14 17:39:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:39,673 INFO L480 AbstractCegarLoop]: Abstraction has 10378 states and 11971 transitions. [2018-09-14 17:39:39,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:39:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 11971 transitions. [2018-09-14 17:39:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-09-14 17:39:39,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:39,723 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 17:39:39,723 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:39,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1764234279, now seen corresponding path program 1 times [2018-09-14 17:39:39,724 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:39,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:39,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:39,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:39,725 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:40,490 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:39:40,698 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:39:40,935 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:39:41,148 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-14 17:39:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 611 proven. 482 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-14 17:39:41,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:41,975 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:41,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:41,983 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:42,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 952 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-09-14 17:39:42,912 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:43,038 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-14 17:39:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 605 proven. 112 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-09-14 17:39:43,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:43,659 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:43,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:43,674 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:44,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 744 proven. 210 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-09-14 17:39:44,461 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:44,672 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 17:39:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 316 proven. 690 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:39:45,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:45,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 8, 8] total 16 [2018-09-14 17:39:45,588 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:45,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:39:45,589 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:39:45,589 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:39:45,589 INFO L87 Difference]: Start difference. First operand 10378 states and 11971 transitions. Second operand 13 states. [2018-09-14 17:39:46,941 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2018-09-14 17:39:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:49,816 INFO L93 Difference]: Finished difference Result 21166 states and 24879 transitions. [2018-09-14 17:39:49,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 17:39:49,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 634 [2018-09-14 17:39:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:49,860 INFO L225 Difference]: With dead ends: 21166 [2018-09-14 17:39:49,860 INFO L226 Difference]: Without dead ends: 10593 [2018-09-14 17:39:49,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2564 GetRequests, 2526 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2018-09-14 17:39:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2018-09-14 17:39:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 9800. [2018-09-14 17:39:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9800 states. [2018-09-14 17:39:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9800 states to 9800 states and 11127 transitions. [2018-09-14 17:39:50,103 INFO L78 Accepts]: Start accepts. Automaton has 9800 states and 11127 transitions. Word has length 634 [2018-09-14 17:39:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:50,104 INFO L480 AbstractCegarLoop]: Abstraction has 9800 states and 11127 transitions. [2018-09-14 17:39:50,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 17:39:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9800 states and 11127 transitions. [2018-09-14 17:39:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2018-09-14 17:39:50,140 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:50,140 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2018-09-14 17:39:50,141 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:50,141 INFO L82 PathProgramCache]: Analyzing trace with hash -648252859, now seen corresponding path program 2 times [2018-09-14 17:39:50,141 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:50,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:50,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:50,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:50,143 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 637 proven. 534 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-09-14 17:39:52,026 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:52,026 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:52,034 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 17:39:52,035 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 17:39:52,209 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 17:39:52,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 17:39:52,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 1004 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-09-14 17:39:53,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 631 proven. 112 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-09-14 17:39:54,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:54,240 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:54,258 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 17:39:54,258 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 17:39:54,624 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 17:39:54,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 17:39:54,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 989 proven. 17 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-09-14 17:39:55,501 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:55,873 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-14 17:39:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 310 proven. 748 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-14 17:39:57,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:57,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 10, 11] total 31 [2018-09-14 17:39:57,983 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:57,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-14 17:39:57,985 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-14 17:39:57,986 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2018-09-14 17:39:57,986 INFO L87 Difference]: Start difference. First operand 9800 states and 11127 transitions. Second operand 18 states. [2018-09-14 17:40:00,178 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-09-14 17:40:01,363 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2018-09-14 17:40:03,117 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-09-14 17:40:03,611 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-09-14 17:40:03,868 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-09-14 17:40:05,986 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-09-14 17:40:06,175 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-09-14 17:40:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:40:07,033 INFO L93 Difference]: Finished difference Result 23664 states and 27623 transitions. [2018-09-14 17:40:07,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 17:40:07,035 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 660 [2018-09-14 17:40:07,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:40:07,078 INFO L225 Difference]: With dead ends: 23664 [2018-09-14 17:40:07,078 INFO L226 Difference]: Without dead ends: 13870 [2018-09-14 17:40:07,111 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2717 GetRequests, 2638 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=813, Invalid=3609, Unknown=0, NotChecked=0, Total=4422 [2018-09-14 17:40:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13870 states. [2018-09-14 17:40:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13870 to 13020. [2018-09-14 17:40:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13020 states. [2018-09-14 17:40:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 14504 transitions. [2018-09-14 17:40:07,366 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 14504 transitions. Word has length 660 [2018-09-14 17:40:07,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:40:07,367 INFO L480 AbstractCegarLoop]: Abstraction has 13020 states and 14504 transitions. [2018-09-14 17:40:07,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-14 17:40:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 14504 transitions. [2018-09-14 17:40:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2018-09-14 17:40:07,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:40:07,421 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 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] [2018-09-14 17:40:07,422 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:40:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash -804316904, now seen corresponding path program 1 times [2018-09-14 17:40:07,423 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:40:07,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:07,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 17:40:07,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:07,424 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:40:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 706 proven. 224 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2018-09-14 17:40:08,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:08,522 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:40:08,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:08,538 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:08,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 1463 proven. 2 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-09-14 17:40:09,194 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 706 proven. 224 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2018-09-14 17:40:09,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:09,793 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:40:09,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:09,810 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:10,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 1463 proven. 2 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-09-14 17:40:10,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 706 proven. 224 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2018-09-14 17:40:11,146 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:40:11,147 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 17:40:11,147 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:40:11,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:40:11,149 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:40:11,149 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:40:11,149 INFO L87 Difference]: Start difference. First operand 13020 states and 14504 transitions. Second operand 7 states. [2018-09-14 17:40:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:40:14,873 INFO L93 Difference]: Finished difference Result 34146 states and 42641 transitions. [2018-09-14 17:40:14,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:40:14,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 782 [2018-09-14 17:40:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:40:15,000 INFO L225 Difference]: With dead ends: 34146 [2018-09-14 17:40:15,001 INFO L226 Difference]: Without dead ends: 21315 [2018-09-14 17:40:15,088 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3144 GetRequests, 3129 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:40:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21315 states. [2018-09-14 17:40:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21315 to 20853. [2018-09-14 17:40:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20853 states. [2018-09-14 17:40:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20853 states to 20853 states and 23722 transitions. [2018-09-14 17:40:15,590 INFO L78 Accepts]: Start accepts. Automaton has 20853 states and 23722 transitions. Word has length 782 [2018-09-14 17:40:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:40:15,590 INFO L480 AbstractCegarLoop]: Abstraction has 20853 states and 23722 transitions. [2018-09-14 17:40:15,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:40:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20853 states and 23722 transitions. [2018-09-14 17:40:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-09-14 17:40:15,622 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:40:15,623 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2018-09-14 17:40:15,623 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:40:15,623 INFO L82 PathProgramCache]: Analyzing trace with hash -261072584, now seen corresponding path program 1 times [2018-09-14 17:40:15,623 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:40:15,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:15,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:15,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:15,624 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:40:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 929 proven. 835 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2018-09-14 17:40:17,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:17,469 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:40:17,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:17,477 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:17,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 1443 proven. 2 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2018-09-14 17:40:18,504 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 917 proven. 112 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2018-09-14 17:40:19,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:19,671 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:40:19,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:19,687 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:20,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:20,678 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:40:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 1435 proven. 10 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2018-09-14 17:40:21,129 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 422 proven. 1075 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2018-09-14 17:40:22,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:40:22,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 8] total 28 [2018-09-14 17:40:22,781 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:40:22,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 17:40:22,782 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 17:40:22,782 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2018-09-14 17:40:22,782 INFO L87 Difference]: Start difference. First operand 20853 states and 23722 transitions. Second operand 17 states. [2018-09-14 17:40:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:40:30,997 INFO L93 Difference]: Finished difference Result 40741 states and 48484 transitions. [2018-09-14 17:40:30,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-14 17:40:30,998 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 823 [2018-09-14 17:40:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:40:31,082 INFO L225 Difference]: With dead ends: 40741 [2018-09-14 17:40:31,082 INFO L226 Difference]: Without dead ends: 19293 [2018-09-14 17:40:31,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3375 GetRequests, 3297 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1093, Invalid=4019, Unknown=0, NotChecked=0, Total=5112 [2018-09-14 17:40:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19293 states. [2018-09-14 17:40:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19293 to 18847. [2018-09-14 17:40:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18847 states. [2018-09-14 17:40:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18847 states to 18847 states and 20985 transitions. [2018-09-14 17:40:31,588 INFO L78 Accepts]: Start accepts. Automaton has 18847 states and 20985 transitions. Word has length 823 [2018-09-14 17:40:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:40:31,589 INFO L480 AbstractCegarLoop]: Abstraction has 18847 states and 20985 transitions. [2018-09-14 17:40:31,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 17:40:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 18847 states and 20985 transitions. [2018-09-14 17:40:31,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2018-09-14 17:40:31,626 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:40:31,627 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:40:31,627 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:40:31,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1171781263, now seen corresponding path program 1 times [2018-09-14 17:40:31,628 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:40:31,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:31,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:31,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:31,629 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:40:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 938 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-14 17:40:33,328 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:33,328 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:40:33,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:33,338 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:33,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 1827 proven. 2 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2018-09-14 17:40:33,977 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 938 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-14 17:40:34,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:34,639 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:40:34,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:34,656 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:35,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 1827 proven. 2 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2018-09-14 17:40:35,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 938 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-14 17:40:36,208 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:40:36,210 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 17:40:36,210 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:40:36,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:40:36,211 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:40:36,212 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:40:36,212 INFO L87 Difference]: Start difference. First operand 18847 states and 20985 transitions. Second operand 7 states. [2018-09-14 17:40:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:40:39,140 INFO L93 Difference]: Finished difference Result 38854 states and 43503 transitions. [2018-09-14 17:40:39,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:40:39,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2018-09-14 17:40:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:40:39,192 INFO L225 Difference]: With dead ends: 38854 [2018-09-14 17:40:39,192 INFO L226 Difference]: Without dead ends: 20196 [2018-09-14 17:40:39,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3911 GetRequests, 3896 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:40:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20196 states. [2018-09-14 17:40:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20196 to 20025. [2018-09-14 17:40:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20025 states. [2018-09-14 17:40:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20025 states to 20025 states and 22062 transitions. [2018-09-14 17:40:39,571 INFO L78 Accepts]: Start accepts. Automaton has 20025 states and 22062 transitions. Word has length 974 [2018-09-14 17:40:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:40:39,572 INFO L480 AbstractCegarLoop]: Abstraction has 20025 states and 22062 transitions. [2018-09-14 17:40:39,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:40:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 20025 states and 22062 transitions. [2018-09-14 17:40:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2018-09-14 17:40:39,618 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:40:39,619 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:40:39,619 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:40:39,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1848364688, now seen corresponding path program 1 times [2018-09-14 17:40:39,620 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:40:39,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:39,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:39,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:39,621 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:40:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1047 proven. 1376 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2018-09-14 17:40:41,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:41,987 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:40:41,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:41,995 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:42,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 2086 proven. 2 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-09-14 17:40:43,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1063 proven. 228 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2018-09-14 17:40:43,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:43,982 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:40:44,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:44,005 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:44,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 2081 proven. 25 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2018-09-14 17:40:45,026 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1063 proven. 228 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2018-09-14 17:40:46,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:40:46,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6, 5, 5] total 23 [2018-09-14 17:40:46,069 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:40:46,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-14 17:40:46,074 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-14 17:40:46,074 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:40:46,074 INFO L87 Difference]: Start difference. First operand 20025 states and 22062 transitions. Second operand 18 states. [2018-09-14 17:40:50,565 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-09-14 17:40:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:40:54,107 INFO L93 Difference]: Finished difference Result 40328 states and 45353 transitions. [2018-09-14 17:40:54,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 17:40:54,107 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1030 [2018-09-14 17:40:54,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:40:54,160 INFO L225 Difference]: With dead ends: 40328 [2018-09-14 17:40:54,160 INFO L226 Difference]: Without dead ends: 20492 [2018-09-14 17:40:54,334 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4200 GetRequests, 4142 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=815, Invalid=2725, Unknown=0, NotChecked=0, Total=3540 [2018-09-14 17:40:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20492 states. [2018-09-14 17:40:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20492 to 20061. [2018-09-14 17:40:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20061 states. [2018-09-14 17:40:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20061 states to 20061 states and 21740 transitions. [2018-09-14 17:40:54,658 INFO L78 Accepts]: Start accepts. Automaton has 20061 states and 21740 transitions. Word has length 1030 [2018-09-14 17:40:54,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:40:54,659 INFO L480 AbstractCegarLoop]: Abstraction has 20061 states and 21740 transitions. [2018-09-14 17:40:54,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-14 17:40:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 20061 states and 21740 transitions. [2018-09-14 17:40:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2018-09-14 17:40:54,691 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:40:54,692 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-09-14 17:40:54,692 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:40:54,693 INFO L82 PathProgramCache]: Analyzing trace with hash -450780986, now seen corresponding path program 1 times [2018-09-14 17:40:54,693 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:40:54,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:54,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:54,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:40:54,694 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:40:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1708 proven. 230 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2018-09-14 17:40:55,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:55,998 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:40:56,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:56,006 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:56,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 2498 proven. 6 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2018-09-14 17:40:57,024 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1708 proven. 303 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-09-14 17:40:58,032 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:58,032 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:40:58,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:58,048 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:58,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 2498 proven. 6 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2018-09-14 17:40:59,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1708 proven. 303 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-09-14 17:41:00,230 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:41:00,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 15 [2018-09-14 17:41:00,231 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:41:00,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:41:00,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:41:00,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:41:00,234 INFO L87 Difference]: Start difference. First operand 20061 states and 21740 transitions. Second operand 9 states. [2018-09-14 17:41:04,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:04,078 INFO L93 Difference]: Finished difference Result 42300 states and 45962 transitions. [2018-09-14 17:41:04,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:41:04,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1151 [2018-09-14 17:41:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:04,114 INFO L225 Difference]: With dead ends: 42300 [2018-09-14 17:41:04,114 INFO L226 Difference]: Without dead ends: 22428 [2018-09-14 17:41:04,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4620 GetRequests, 4600 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:41:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22428 states. [2018-09-14 17:41:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22428 to 21745. [2018-09-14 17:41:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21745 states. [2018-09-14 17:41:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21745 states to 21745 states and 23614 transitions. [2018-09-14 17:41:04,466 INFO L78 Accepts]: Start accepts. Automaton has 21745 states and 23614 transitions. Word has length 1151 [2018-09-14 17:41:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:04,467 INFO L480 AbstractCegarLoop]: Abstraction has 21745 states and 23614 transitions. [2018-09-14 17:41:04,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:41:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 21745 states and 23614 transitions. [2018-09-14 17:41:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2018-09-14 17:41:04,520 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:04,520 INFO L376 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:04,521 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:04,521 INFO L82 PathProgramCache]: Analyzing trace with hash 857187999, now seen corresponding path program 1 times [2018-09-14 17:41:04,521 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:04,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:04,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:04,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:04,522 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:05,471 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 17:41:06,180 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-09-14 17:41:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 1325 proven. 3191 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2018-09-14 17:41:09,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:09,775 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:41:09,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:09,783 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:10,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 4013 proven. 2 refuted. 0 times theorem prover too weak. 2590 trivial. 0 not checked. [2018-09-14 17:41:11,090 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 1517 proven. 388 refuted. 0 times theorem prover too weak. 4700 trivial. 0 not checked. [2018-09-14 17:41:13,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:13,083 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:41:13,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:13,099 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:13,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:15,127 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2018-09-14 17:41:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 4664 proven. 24 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2018-09-14 17:41:17,845 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:18,463 WARN L178 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-09-14 17:41:18,721 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-14 17:41:19,435 WARN L178 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-09-14 17:41:20,122 WARN L178 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-14 17:41:21,237 WARN L178 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-14 17:41:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6605 backedges. 787 proven. 4057 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2018-09-14 17:41:26,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:41:26,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 13, 14] total 41 [2018-09-14 17:41:26,316 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:41:26,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 17:41:26,319 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 17:41:26,319 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2018-09-14 17:41:26,320 INFO L87 Difference]: Start difference. First operand 21745 states and 23614 transitions. Second operand 19 states. [2018-09-14 17:41:28,032 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-09-14 17:41:28,786 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-09-14 17:41:31,644 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-09-14 17:41:31,823 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2018-09-14 17:41:35,550 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-09-14 17:41:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:41:39,313 INFO L93 Difference]: Finished difference Result 44065 states and 50664 transitions. [2018-09-14 17:41:39,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-14 17:41:39,314 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1508 [2018-09-14 17:41:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:41:39,399 INFO L225 Difference]: With dead ends: 44065 [2018-09-14 17:41:39,399 INFO L226 Difference]: Without dead ends: 22509 [2018-09-14 17:41:39,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6137 GetRequests, 6028 SyntacticMatches, 21 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2587 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1265, Invalid=6745, Unknown=0, NotChecked=0, Total=8010 [2018-09-14 17:41:39,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22509 states. [2018-09-14 17:41:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22509 to 21583. [2018-09-14 17:41:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21583 states. [2018-09-14 17:41:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21583 states to 21583 states and 23191 transitions. [2018-09-14 17:41:39,840 INFO L78 Accepts]: Start accepts. Automaton has 21583 states and 23191 transitions. Word has length 1508 [2018-09-14 17:41:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:41:39,841 INFO L480 AbstractCegarLoop]: Abstraction has 21583 states and 23191 transitions. [2018-09-14 17:41:39,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 17:41:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 21583 states and 23191 transitions. [2018-09-14 17:41:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1628 [2018-09-14 17:41:39,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:41:39,871 INFO L376 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:41:39,871 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:41:39,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2068892919, now seen corresponding path program 1 times [2018-09-14 17:41:39,872 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:41:39,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:39,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:39,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:41:39,873 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:41:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 1796 proven. 1168 refuted. 0 times theorem prover too weak. 4903 trivial. 0 not checked. [2018-09-14 17:41:43,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:43,434 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:41:43,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:43,442 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:43,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 3025 proven. 2 refuted. 0 times theorem prover too weak. 4840 trivial. 0 not checked. [2018-09-14 17:41:45,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:45,255 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-09-14 17:41:45,713 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:41:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 1805 proven. 112 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2018-09-14 17:41:48,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:41:48,559 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:41:48,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:41:48,577 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:41:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:41:49,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:41:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 3027 proven. 60 refuted. 0 times theorem prover too weak. 4780 trivial. 0 not checked. [2018-09-14 17:41:50,565 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:41:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7867 backedges. 1805 proven. 112 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2018-09-14 17:41:53,663 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:41:53,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 6, 5] total 24 [2018-09-14 17:41:53,665 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:41:53,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 17:41:53,666 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 17:41:53,666 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:41:53,667 INFO L87 Difference]: Start difference. First operand 21583 states and 23191 transitions. Second operand 17 states. [2018-09-14 17:41:54,489 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2018-09-14 17:42:00,726 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2018-09-14 17:42:01,602 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-09-14 17:42:02,599 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-09-14 17:42:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:02,855 INFO L93 Difference]: Finished difference Result 43187 states and 46473 transitions. [2018-09-14 17:42:02,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-14 17:42:02,857 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1627 [2018-09-14 17:42:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:02,895 INFO L225 Difference]: With dead ends: 43187 [2018-09-14 17:42:02,895 INFO L226 Difference]: Without dead ends: 21793 [2018-09-14 17:42:02,924 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6591 GetRequests, 6525 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=740, Invalid=3420, Unknown=0, NotChecked=0, Total=4160 [2018-09-14 17:42:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21793 states. [2018-09-14 17:42:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21793 to 21572. [2018-09-14 17:42:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21572 states. [2018-09-14 17:42:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21572 states to 21572 states and 23107 transitions. [2018-09-14 17:42:03,198 INFO L78 Accepts]: Start accepts. Automaton has 21572 states and 23107 transitions. Word has length 1627 [2018-09-14 17:42:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:03,199 INFO L480 AbstractCegarLoop]: Abstraction has 21572 states and 23107 transitions. [2018-09-14 17:42:03,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 17:42:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 21572 states and 23107 transitions. [2018-09-14 17:42:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1847 [2018-09-14 17:42:03,242 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:03,243 INFO L376 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:42:03,243 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:03,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1000087254, now seen corresponding path program 1 times [2018-09-14 17:42:03,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:03,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:03,245 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:04,610 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:42:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 2179 proven. 2489 refuted. 0 times theorem prover too weak. 5916 trivial. 0 not checked. [2018-09-14 17:42:08,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:08,268 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:42:08,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:08,278 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:08,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 4574 proven. 6 refuted. 0 times theorem prover too weak. 6004 trivial. 0 not checked. [2018-09-14 17:42:10,203 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 3147 proven. 214 refuted. 0 times theorem prover too weak. 7223 trivial. 0 not checked. [2018-09-14 17:42:12,976 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:12,976 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:12,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:12,993 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:14,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 3705 proven. 978 refuted. 0 times theorem prover too weak. 5901 trivial. 0 not checked. [2018-09-14 17:42:16,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:17,096 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-14 17:42:17,236 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-14 17:42:17,531 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-09-14 17:42:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 989 proven. 3746 refuted. 0 times theorem prover too weak. 5849 trivial. 0 not checked. [2018-09-14 17:42:23,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:23,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 11, 11] total 31 [2018-09-14 17:42:23,227 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:23,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 17:42:23,229 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 17:42:23,229 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2018-09-14 17:42:23,229 INFO L87 Difference]: Start difference. First operand 21572 states and 23107 transitions. Second operand 16 states. [2018-09-14 17:42:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:42:30,949 INFO L93 Difference]: Finished difference Result 43819 states and 47825 transitions. [2018-09-14 17:42:30,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-14 17:42:30,949 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1846 [2018-09-14 17:42:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:42:30,999 INFO L225 Difference]: With dead ends: 43819 [2018-09-14 17:42:30,999 INFO L226 Difference]: Without dead ends: 21887 [2018-09-14 17:42:31,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7473 GetRequests, 7375 SyntacticMatches, 34 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2018-09-14 17:42:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21887 states. [2018-09-14 17:42:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21887 to 20095. [2018-09-14 17:42:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20095 states. [2018-09-14 17:42:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20095 states to 20095 states and 21266 transitions. [2018-09-14 17:42:31,328 INFO L78 Accepts]: Start accepts. Automaton has 20095 states and 21266 transitions. Word has length 1846 [2018-09-14 17:42:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:42:31,329 INFO L480 AbstractCegarLoop]: Abstraction has 20095 states and 21266 transitions. [2018-09-14 17:42:31,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 17:42:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 20095 states and 21266 transitions. [2018-09-14 17:42:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1887 [2018-09-14 17:42:31,366 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:42:31,367 INFO L376 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:42:31,367 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:42:31,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2116795064, now seen corresponding path program 1 times [2018-09-14 17:42:31,368 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:42:31,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:31,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:31,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:42:31,369 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:42:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:32,714 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 17:42:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10569 backedges. 2309 proven. 501 refuted. 0 times theorem prover too weak. 7759 trivial. 0 not checked. [2018-09-14 17:42:34,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:34,184 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:42:34,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:34,192 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:34,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10569 backedges. 4541 proven. 2 refuted. 0 times theorem prover too weak. 6026 trivial. 0 not checked. [2018-09-14 17:42:35,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:42:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10569 backedges. 2330 proven. 228 refuted. 0 times theorem prover too weak. 8011 trivial. 0 not checked. [2018-09-14 17:42:37,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:42:37,700 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:42:37,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:42:37,718 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:42:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:42:38,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:42:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10569 backedges. 4541 proven. 2 refuted. 0 times theorem prover too weak. 6026 trivial. 0 not checked. [2018-09-14 17:42:39,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 17:42:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10569 backedges. 2330 proven. 228 refuted. 0 times theorem prover too weak. 8011 trivial. 0 not checked. [2018-09-14 17:42:41,719 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:42:41,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 12 [2018-09-14 17:42:41,720 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:42:41,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 17:42:41,722 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 17:42:41,722 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:42:41,723 INFO L87 Difference]: Start difference. First operand 20095 states and 21266 transitions. Second operand 11 states. [2018-09-14 17:42:41,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 17:42:41,724 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:42:41,729 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:42:41,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:42:41 BoogieIcfgContainer [2018-09-14 17:42:41,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:42:41,730 INFO L168 Benchmark]: Toolchain (without parser) took 228560.63 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-14 17:42:41,731 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:42:41,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:42:41,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:42:41,732 INFO L168 Benchmark]: Boogie Preprocessor took 322.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -852.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:42:41,733 INFO L168 Benchmark]: RCFGBuilder took 3841.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 128.1 MB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:42:41,734 INFO L168 Benchmark]: TraceAbstraction took 223355.43 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -692.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:42:41,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 892.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 141.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 322.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -852.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3841.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 128.1 MB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223355.43 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -692.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was constructing difference of abstraction (20095states) and FLOYD_HOARE automaton (currently 2 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 223.2s OverallTime, 18 OverallIterations, 15 TraceHistogramMax, 97.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1684 SDtfs, 40738 SDslu, 4101 SDs, 0 SdLazy, 50151 SolverSat, 7441 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 61.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57124 GetRequests, 56416 SyntacticMatches, 130 SemanticMatches, 578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9725 ImplicationChecksByTransitivity, 39.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21745occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 7567 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 10.7s SatisfiabilityAnalysisTime, 91.0s InterpolantComputationTime, 43136 NumberOfCodeBlocks, 43136 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 71268 ConstructedInterpolants, 12 QuantifiedInterpolants, 304205038 SizeOfPredicates, 95 NumberOfNonLiveVariables, 39121 ConjunctsInSsa, 531 ConjunctsInUnsatCore, 72 InterpolantComputations, 5 PerfectInterpolantSequences, 243384/271531 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label17_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-42-41-750.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label17_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-42-41-750.csv Completed graceful shutdown