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/Problem04_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:22:50,313 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:22:50,315 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:22:50,330 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:22:50,330 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:22:50,331 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:22:50,333 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:22:50,335 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:22:50,337 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:22:50,338 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:22:50,339 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:22:50,342 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:22:50,343 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:22:50,344 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:22:50,345 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:22:50,346 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:22:50,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:22:50,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:22:50,350 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:22:50,352 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:22:50,353 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:22:50,354 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:22:50,356 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:22:50,357 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:22:50,357 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:22:50,358 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:22:50,359 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:22:50,362 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:22:50,363 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:22:50,366 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:22:50,367 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:22:50,367 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:22:50,368 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:22:50,368 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:22:50,369 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:22:50,370 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:22:50,370 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 [2018-09-18 10:22:50,400 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:22:50,402 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:22:50,403 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:22:50,403 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:22:50,403 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:22:50,403 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:22:50,404 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:22:50,404 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:22:50,404 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:22:50,404 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:22:50,405 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:22:50,405 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:22:50,406 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:22:50,406 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:22:50,406 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:22:50,407 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:22:50,407 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:22:50,407 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:22:50,407 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:22:50,407 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:22:50,408 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:22:50,408 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:22:50,408 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:22:50,408 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:22:50,410 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:22:50,410 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:22:50,410 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:22:50,411 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:22:50,411 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:22:50,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:22:50,411 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:22:50,412 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:22:50,412 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:22:50,412 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:22:50,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:22:50,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:22:50,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:22:50,499 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:22:50,499 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:22:50,500 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label30_true-unreach-call.c [2018-09-18 10:22:50,853 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/121a8e85c/c6e3be43454f446bb3b7b90af2d747b6/FLAGc829d927d [2018-09-18 10:22:51,328 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:22:51,329 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label30_true-unreach-call.c [2018-09-18 10:22:51,359 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/121a8e85c/c6e3be43454f446bb3b7b90af2d747b6/FLAGc829d927d [2018-09-18 10:22:51,376 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/121a8e85c/c6e3be43454f446bb3b7b90af2d747b6 [2018-09-18 10:22:51,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:22:51,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:22:51,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:22:51,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:22:51,400 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:22:51,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:22:51" (1/1) ... [2018-09-18 10:22:51,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfee46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:51, skipping insertion in model container [2018-09-18 10:22:51,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:22:51" (1/1) ... [2018-09-18 10:22:51,418 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:22:52,676 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:22:52,695 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:22:53,370 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:22:53,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53 WrapperNode [2018-09-18 10:22:53,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:22:53,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:22:53,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:22:53,522 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:22:53,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:53,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:53,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:22:53,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:22:53,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:22:53,693 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:22:54,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:54,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:54,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:54,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:54,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:54,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:54,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (1/1) ... [2018-09-18 10:22:54,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:22:54,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:22:54,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:22:54,419 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:22:54,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (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 [2018-09-18 10:22:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:22:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:22:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:22:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:22:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:22:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:22:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:22:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:22:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:22:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:22:54,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:22:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:22:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:22:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:23:04,271 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:23:04,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:23:04 BoogieIcfgContainer [2018-09-18 10:23:04,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:23:04,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:23:04,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:23:04,277 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:23:04,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:22:51" (1/3) ... [2018-09-18 10:23:04,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf54900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:23:04, skipping insertion in model container [2018-09-18 10:23:04,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:22:53" (2/3) ... [2018-09-18 10:23:04,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf54900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:23:04, skipping insertion in model container [2018-09-18 10:23:04,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:23:04" (3/3) ... [2018-09-18 10:23:04,281 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label30_true-unreach-call.c [2018-09-18 10:23:04,290 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:23:04,299 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:23:04,376 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:23:04,376 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:23:04,377 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:23:04,377 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:23:04,377 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:23:04,377 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:23:04,377 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:23:04,378 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:23:04,378 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:23:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-18 10:23:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2018-09-18 10:23:04,639 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:04,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:04,642 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash -649059658, now seen corresponding path program 1 times [2018-09-18 10:23:04,657 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:04,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:04,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:04,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:04,708 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:06,293 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:23:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:07,337 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:23:07,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:23:07,338 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:23:07,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:23:07,358 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:23:07,358 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:23:07,361 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-18 10:23:14,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:14,503 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-18 10:23:14,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:23:14,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 794 [2018-09-18 10:23:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:14,546 INFO L225 Difference]: With dead ends: 2647 [2018-09-18 10:23:14,547 INFO L226 Difference]: Without dead ends: 1738 [2018-09-18 10:23:14,558 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:23:14,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-18 10:23:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-18 10:23:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-18 10:23:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3121 transitions. [2018-09-18 10:23:14,732 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3121 transitions. Word has length 794 [2018-09-18 10:23:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:14,736 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3121 transitions. [2018-09-18 10:23:14,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:23:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3121 transitions. [2018-09-18 10:23:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2018-09-18 10:23:14,769 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:14,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:14,770 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:14,772 INFO L82 PathProgramCache]: Analyzing trace with hash -909612431, now seen corresponding path program 1 times [2018-09-18 10:23:14,772 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:14,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:14,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:14,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:14,774 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:15,286 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:23:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:15,693 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:23:15,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:23:15,693 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:23:15,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:23:15,696 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:23:15,696 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:23:15,697 INFO L87 Difference]: Start difference. First operand 1738 states and 3121 transitions. Second operand 6 states. [2018-09-18 10:23:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:25,894 INFO L93 Difference]: Finished difference Result 5353 states and 9715 transitions. [2018-09-18 10:23:25,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:23:25,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 853 [2018-09-18 10:23:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:25,922 INFO L225 Difference]: With dead ends: 5353 [2018-09-18 10:23:25,922 INFO L226 Difference]: Without dead ends: 3621 [2018-09-18 10:23:25,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:23:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2018-09-18 10:23:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3589. [2018-09-18 10:23:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2018-09-18 10:23:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 6080 transitions. [2018-09-18 10:23:26,029 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 6080 transitions. Word has length 853 [2018-09-18 10:23:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:26,030 INFO L480 AbstractCegarLoop]: Abstraction has 3589 states and 6080 transitions. [2018-09-18 10:23:26,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:23:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 6080 transitions. [2018-09-18 10:23:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2018-09-18 10:23:26,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:26,053 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:26,053 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:26,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1701319310, now seen corresponding path program 1 times [2018-09-18 10:23:26,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:26,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:26,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:26,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:26,055 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:26,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:26,912 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 [2018-09-18 10:23:26,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:26,926 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:27,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:27,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:28,182 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 10:23:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:28,971 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:28,971 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 [2018-09-18 10:23:29,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:29,002 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:29,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:30,796 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:31,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:23:31,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:23:31,279 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:23:31,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:23:31,284 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:23:31,284 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:23:31,285 INFO L87 Difference]: Start difference. First operand 3589 states and 6080 transitions. Second operand 9 states. [2018-09-18 10:23:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:47,051 INFO L93 Difference]: Finished difference Result 14737 states and 25721 transitions. [2018-09-18 10:23:47,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-18 10:23:47,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 862 [2018-09-18 10:23:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:47,114 INFO L225 Difference]: With dead ends: 14737 [2018-09-18 10:23:47,115 INFO L226 Difference]: Without dead ends: 11154 [2018-09-18 10:23:47,132 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3486 GetRequests, 3446 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 10:23:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2018-09-18 10:23:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 11024. [2018-09-18 10:23:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11024 states. [2018-09-18 10:23:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11024 states to 11024 states and 16890 transitions. [2018-09-18 10:23:47,440 INFO L78 Accepts]: Start accepts. Automaton has 11024 states and 16890 transitions. Word has length 862 [2018-09-18 10:23:47,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:47,441 INFO L480 AbstractCegarLoop]: Abstraction has 11024 states and 16890 transitions. [2018-09-18 10:23:47,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:23:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 11024 states and 16890 transitions. [2018-09-18 10:23:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2018-09-18 10:23:47,487 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:47,488 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:47,488 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:47,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1349540485, now seen corresponding path program 1 times [2018-09-18 10:23:47,489 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:47,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:47,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:47,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:47,490 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-18 10:23:48,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:48,338 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 [2018-09-18 10:23:48,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:48,346 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:48,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:23:49,182 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-18 10:23:49,783 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:23:49,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:23:49,784 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:23:49,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:23:49,785 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:23:49,785 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:23:49,785 INFO L87 Difference]: Start difference. First operand 11024 states and 16890 transitions. Second operand 5 states. [2018-09-18 10:23:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:57,166 INFO L93 Difference]: Finished difference Result 33474 states and 54793 transitions. [2018-09-18 10:23:57,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:23:57,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 901 [2018-09-18 10:23:57,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:57,292 INFO L225 Difference]: With dead ends: 33474 [2018-09-18 10:23:57,293 INFO L226 Difference]: Without dead ends: 22456 [2018-09-18 10:23:57,339 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1811 GetRequests, 1796 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:23:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22456 states. [2018-09-18 10:23:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22456 to 22257. [2018-09-18 10:23:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22257 states. [2018-09-18 10:23:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 35192 transitions. [2018-09-18 10:23:57,917 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 35192 transitions. Word has length 901 [2018-09-18 10:23:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:57,918 INFO L480 AbstractCegarLoop]: Abstraction has 22257 states and 35192 transitions. [2018-09-18 10:23:57,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:23:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 35192 transitions. [2018-09-18 10:23:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2018-09-18 10:23:58,007 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:58,008 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:58,008 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash 746792820, now seen corresponding path program 1 times [2018-09-18 10:23:58,009 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:58,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:58,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:58,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:58,011 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 10:23:59,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:59,451 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) [2018-09-18 10:23:59,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:59,469 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:23:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:59,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:24:00,238 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 10:24:00,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:00,856 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 [2018-09-18 10:24:00,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:00,873 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:01,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:24:02,136 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 10:24:02,519 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:02,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:24:02,520 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:02,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:24:02,523 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:24:02,523 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:24:02,524 INFO L87 Difference]: Start difference. First operand 22257 states and 35192 transitions. Second operand 9 states. [2018-09-18 10:24:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:20,685 INFO L93 Difference]: Finished difference Result 67540 states and 127057 transitions. [2018-09-18 10:24:20,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-18 10:24:20,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 919 [2018-09-18 10:24:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:20,960 INFO L225 Difference]: With dead ends: 67540 [2018-09-18 10:24:20,960 INFO L226 Difference]: Without dead ends: 45289 [2018-09-18 10:24:21,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3738 GetRequests, 3694 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=405, Invalid=1575, Unknown=0, NotChecked=0, Total=1980 [2018-09-18 10:24:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45289 states. [2018-09-18 10:24:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45289 to 43353. [2018-09-18 10:24:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43353 states. [2018-09-18 10:24:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43353 states to 43353 states and 60221 transitions. [2018-09-18 10:24:22,555 INFO L78 Accepts]: Start accepts. Automaton has 43353 states and 60221 transitions. Word has length 919 [2018-09-18 10:24:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:22,555 INFO L480 AbstractCegarLoop]: Abstraction has 43353 states and 60221 transitions. [2018-09-18 10:24:22,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:24:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 43353 states and 60221 transitions. [2018-09-18 10:24:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-09-18 10:24:22,660 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:22,661 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:22,661 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:22,661 INFO L82 PathProgramCache]: Analyzing trace with hash 838012576, now seen corresponding path program 1 times [2018-09-18 10:24:22,662 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:22,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:22,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:22,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:22,663 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 146 proven. 28 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 10:24:23,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:23,831 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 [2018-09-18 10:24:23,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:23,843 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:24,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:24:24,452 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 146 proven. 28 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 10:24:25,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:25,128 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 [2018-09-18 10:24:25,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:25,145 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:25,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-09-18 10:24:26,524 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 135 proven. 66 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 10:24:27,070 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:27,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:24:27,071 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:27,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:24:27,072 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:24:27,072 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:24:27,073 INFO L87 Difference]: Start difference. First operand 43353 states and 60221 transitions. Second operand 9 states. [2018-09-18 10:24:40,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:40,915 INFO L93 Difference]: Finished difference Result 146011 states and 221671 transitions. [2018-09-18 10:24:40,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-18 10:24:40,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 928 [2018-09-18 10:24:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:41,697 INFO L225 Difference]: With dead ends: 146011 [2018-09-18 10:24:41,697 INFO L226 Difference]: Without dead ends: 102664 [2018-09-18 10:24:41,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3764 GetRequests, 3725 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2018-09-18 10:24:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102664 states. [2018-09-18 10:24:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102664 to 102038. [2018-09-18 10:24:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102038 states. [2018-09-18 10:24:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102038 states to 102038 states and 132661 transitions. [2018-09-18 10:24:43,707 INFO L78 Accepts]: Start accepts. Automaton has 102038 states and 132661 transitions. Word has length 928 [2018-09-18 10:24:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:43,707 INFO L480 AbstractCegarLoop]: Abstraction has 102038 states and 132661 transitions. [2018-09-18 10:24:43,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:24:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 102038 states and 132661 transitions. [2018-09-18 10:24:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2018-09-18 10:24:43,838 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:43,839 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:43,839 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:43,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1894585925, now seen corresponding path program 1 times [2018-09-18 10:24:43,840 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:43,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:43,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:43,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:43,842 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:44,679 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 10:24:44,983 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 10:24:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 393 proven. 50 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-18 10:24:46,162 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:46,162 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 [2018-09-18 10:24:46,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:46,174 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:46,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 10:24:47,473 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 10:24:48,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:48,519 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 [2018-09-18 10:24:48,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:48,536 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:49,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 10:24:50,402 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (10)] Forcibly destroying the process [2018-09-18 10:24:51,408 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:51,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 18 [2018-09-18 10:24:51,409 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:51,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 10:24:51,411 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 10:24:51,412 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:24:51,412 INFO L87 Difference]: Start difference. First operand 102038 states and 132661 transitions. Second operand 10 states. [2018-09-18 10:25:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:25:12,371 INFO L93 Difference]: Finished difference Result 258397 states and 346942 transitions. [2018-09-18 10:25:12,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-18 10:25:12,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1142 [2018-09-18 10:25:12,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:25:12,668 INFO L225 Difference]: With dead ends: 258397 [2018-09-18 10:25:12,668 INFO L226 Difference]: Without dead ends: 128912 [2018-09-18 10:25:12,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4637 GetRequests, 4585 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756 [2018-09-18 10:25:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128912 states. [2018-09-18 10:25:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128912 to 118862. [2018-09-18 10:25:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118862 states. [2018-09-18 10:25:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118862 states to 118862 states and 132439 transitions. [2018-09-18 10:25:15,617 INFO L78 Accepts]: Start accepts. Automaton has 118862 states and 132439 transitions. Word has length 1142 [2018-09-18 10:25:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:25:15,618 INFO L480 AbstractCegarLoop]: Abstraction has 118862 states and 132439 transitions. [2018-09-18 10:25:15,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 10:25:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 118862 states and 132439 transitions. [2018-09-18 10:25:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1455 [2018-09-18 10:25:15,731 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:25:15,732 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:25:15,733 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:25:15,734 INFO L82 PathProgramCache]: Analyzing trace with hash -179391125, now seen corresponding path program 1 times [2018-09-18 10:25:15,734 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:25:15,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:15,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:15,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:15,735 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:25:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 979 proven. 336 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-09-18 10:25:22,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:25:22,846 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 [2018-09-18 10:25:22,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:22,857 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:25:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:23,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:25:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:25:24,968 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:25:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:25:25,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:25:25,948 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 [2018-09-18 10:25:25,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:25,963 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:25:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:27,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:25:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:25:27,797 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:25:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:25:28,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:25:28,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5, 5, 5] total 27 [2018-09-18 10:25:28,784 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:25:28,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-18 10:25:28,786 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-18 10:25:28,787 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2018-09-18 10:25:28,787 INFO L87 Difference]: Start difference. First operand 118862 states and 132439 transitions. Second operand 21 states. [2018-09-18 10:25:30,225 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-09-18 10:25:31,091 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-09-18 10:25:31,276 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-09-18 10:25:32,481 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2018-09-18 10:25:33,342 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2018-09-18 10:25:34,086 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-09-18 10:25:35,821 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-09-18 10:25:36,636 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-09-18 10:25:38,373 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-09-18 10:25:40,107 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2018-09-18 10:25:40,753 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-09-18 10:25:42,858 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2018-09-18 10:25:43,713 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2018-09-18 10:25:46,695 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-09-18 10:25:48,082 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-09-18 10:25:50,528 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-09-18 10:25:53,330 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-09-18 10:25:53,632 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-09-18 10:25:54,811 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-09-18 10:25:55,428 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-09-18 10:25:57,277 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2018-09-18 10:25:57,478 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-09-18 10:25:58,202 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2018-09-18 10:26:00,187 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-09-18 10:26:00,673 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2018-09-18 10:26:01,185 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-09-18 10:26:01,606 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-09-18 10:26:02,264 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-09-18 10:26:02,788 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-09-18 10:26:03,799 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-09-18 10:26:04,210 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-09-18 10:26:04,375 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-09-18 10:26:04,742 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-09-18 10:26:05,096 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-09-18 10:26:05,291 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-09-18 10:26:05,711 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-09-18 10:26:06,003 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-09-18 10:26:06,981 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-09-18 10:26:08,862 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-09-18 10:26:09,522 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-09-18 10:26:09,798 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-09-18 10:26:10,303 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2018-09-18 10:26:10,661 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2018-09-18 10:26:10,965 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2018-09-18 10:26:11,582 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-09-18 10:26:11,971 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-09-18 10:26:12,603 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-09-18 10:26:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:26:13,713 INFO L93 Difference]: Finished difference Result 238898 states and 267654 transitions. [2018-09-18 10:26:13,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-18 10:26:13,713 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1454 [2018-09-18 10:26:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:26:14,101 INFO L225 Difference]: With dead ends: 238898 [2018-09-18 10:26:14,101 INFO L226 Difference]: Without dead ends: 120877 [2018-09-18 10:26:14,327 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6002 GetRequests, 5880 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5167 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=2586, Invalid=12176, Unknown=0, NotChecked=0, Total=14762 [2018-09-18 10:26:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120877 states. [2018-09-18 10:26:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120877 to 112143. [2018-09-18 10:26:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112143 states. [2018-09-18 10:26:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112143 states to 112143 states and 121279 transitions. [2018-09-18 10:26:16,786 INFO L78 Accepts]: Start accepts. Automaton has 112143 states and 121279 transitions. Word has length 1454 [2018-09-18 10:26:16,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:26:16,787 INFO L480 AbstractCegarLoop]: Abstraction has 112143 states and 121279 transitions. [2018-09-18 10:26:16,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-18 10:26:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 112143 states and 121279 transitions. [2018-09-18 10:26:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1486 [2018-09-18 10:26:16,895 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:26:16,896 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:26:16,897 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:26:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash 16173969, now seen corresponding path program 1 times [2018-09-18 10:26:16,898 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:26:16,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:16,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:16,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:16,899 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:26:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 987 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 10:26:19,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:26:19,621 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 [2018-09-18 10:26:19,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:19,628 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:26:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:20,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:26:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 981 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-18 10:26:21,775 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:26:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 981 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-18 10:26:23,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:26:23,393 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 [2018-09-18 10:26:23,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:23,414 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:26:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:24,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:26:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 981 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-18 10:26:25,367 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:26:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 981 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-18 10:26:26,998 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:26:27,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-18 10:26:27,000 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:26:27,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:26:27,002 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:26:27,002 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:26:27,002 INFO L87 Difference]: Start difference. First operand 112143 states and 121279 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 10:26:35,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:26:35,293 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:26:35,298 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:26:35,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:26:35 BoogieIcfgContainer [2018-09-18 10:26:35,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:26:35,299 INFO L168 Benchmark]: Toolchain (without parser) took 223910.64 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -520.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-18 10:26:35,300 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. [2018-09-18 10:26:35,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2127.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:26:35,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 171.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:26:35,302 INFO L168 Benchmark]: Boogie Preprocessor took 725.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:26:35,303 INFO L168 Benchmark]: RCFGBuilder took 9853.42 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 701.0 MB). Peak memory consumption was 701.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:26:35,304 INFO L168 Benchmark]: TraceAbstraction took 211025.46 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -368.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-18 10:26:35,308 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 2127.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 171.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 725.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9853.42 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 701.0 MB). Peak memory consumption was 701.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211025.46 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -368.3 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: 4700]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4700). Cancelled while BasicCegarLoop was constructing difference of abstraction (112143states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (178649 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 210.9s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 149.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1652 SDtfs, 72922 SDslu, 3661 SDs, 0 SdLazy, 92097 SolverSat, 31551 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29408 GetRequests, 29060 SyntacticMatches, 26 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7135 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118862occurred in iteration=7, 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: 9.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 21707 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 29.8s InterpolantComputationTime, 23819 NumberOfCodeBlocks, 23819 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 38265 ConstructedInterpolants, 0 QuantifiedInterpolants, 90792072 SizeOfPredicates, 6 NumberOfNonLiveVariables, 20704 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 35 InterpolantComputations, 3 PerfectInterpolantSequences, 18132/18832 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/Problem04_label30_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-26-35-321.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label30_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-26-35-321.csv Completed graceful shutdown