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/Problem03_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:17:30,392 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:17:30,395 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:17:30,414 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:17:30,415 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:17:30,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:17:30,417 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:17:30,420 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:17:30,422 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:17:30,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:17:30,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:17:30,425 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:17:30,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:17:30,429 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:17:30,432 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:17:30,438 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:17:30,439 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:17:30,442 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:17:30,444 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:17:30,447 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:17:30,449 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:17:30,451 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:17:30,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:17:30,453 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:17:30,454 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:17:30,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:17:30,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:17:30,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:17:30,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:17:30,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:17:30,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:17:30,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:17:30,461 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:17:30,463 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:17:30,465 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:17:30,465 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:17:30,466 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 10:17:30,493 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:17:30,493 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:17:30,494 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:17:30,495 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:17:30,495 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:17:30,495 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:17:30,495 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:17:30,495 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:17:30,496 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:17:30,496 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:17:30,496 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:17:30,496 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:17:30,500 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:17:30,501 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:17:30,501 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:17:30,501 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:17:30,501 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:17:30,503 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:17:30,503 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:17:30,503 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:17:30,504 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:17:30,504 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:17:30,504 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:17:30,504 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:17:30,505 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:17:30,505 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:17:30,505 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:17:30,505 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:17:30,505 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:17:30,506 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:17:30,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:17:30,506 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:17:30,506 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:17:30,507 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:17:30,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:17:30,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:17:30,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:17:30,593 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:17:30,593 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:17:30,594 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c [2018-09-18 10:17:30,961 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f41da36/ce7b3ec8be484818af2b996a5964ac35/FLAG0851a8b1c [2018-09-18 10:17:31,308 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:17:31,309 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c [2018-09-18 10:17:31,331 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f41da36/ce7b3ec8be484818af2b996a5964ac35/FLAG0851a8b1c [2018-09-18 10:17:31,355 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f41da36/ce7b3ec8be484818af2b996a5964ac35 [2018-09-18 10:17:31,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:17:31,372 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:17:31,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:17:31,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:17:31,382 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:17:31,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:17:31" (1/1) ... [2018-09-18 10:17:31,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ef8fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:31, skipping insertion in model container [2018-09-18 10:17:31,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:17:31" (1/1) ... [2018-09-18 10:17:31,399 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:17:32,112 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:17:32,133 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:17:32,373 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:17:32,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32 WrapperNode [2018-09-18 10:17:32,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:17:32,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:17:32,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:17:32,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:17:32,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:17:32,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:17:32,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:17:32,621 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:17:32,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (1/1) ... [2018-09-18 10:17:32,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:17:32,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:17:32,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:17:32,996 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:17:32,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (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 10:17:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:17:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:17:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:17:33,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:17:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:17:33,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:17:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:17:33,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:17:37,906 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:17:37,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:17:37 BoogieIcfgContainer [2018-09-18 10:17:37,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:17:37,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:17:37,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:17:37,912 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:17:37,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:17:31" (1/3) ... [2018-09-18 10:17:37,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2b1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:17:37, skipping insertion in model container [2018-09-18 10:17:37,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:17:32" (2/3) ... [2018-09-18 10:17:37,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2b1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:17:37, skipping insertion in model container [2018-09-18 10:17:37,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:17:37" (3/3) ... [2018-09-18 10:17:37,918 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label57_true-unreach-call.c [2018-09-18 10:17:37,930 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:17:37,942 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:17:38,019 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:17:38,020 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:17:38,020 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:17:38,020 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:17:38,020 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:17:38,021 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:17:38,021 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:17:38,021 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:17:38,021 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:17:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-18 10:17:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-18 10:17:38,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:17:38,115 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] [2018-09-18 10:17:38,117 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:17:38,123 INFO L82 PathProgramCache]: Analyzing trace with hash 790095017, now seen corresponding path program 1 times [2018-09-18 10:17:38,126 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:17:38,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:38,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:38,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:38,188 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:17:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:39,115 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:17:39,358 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 10:17:39,360 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:17:39,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:17:39,361 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:17:39,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:17:39,385 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:17:39,386 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:17:39,389 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-09-18 10:17:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:17:41,534 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-09-18 10:17:41,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:17:41,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-09-18 10:17:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:17:41,564 INFO L225 Difference]: With dead ends: 844 [2018-09-18 10:17:41,567 INFO L226 Difference]: Without dead ends: 530 [2018-09-18 10:17:41,580 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:17:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-09-18 10:17:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-09-18 10:17:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-09-18 10:17:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-09-18 10:17:41,687 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 168 [2018-09-18 10:17:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:17:41,689 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-09-18 10:17:41,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:17:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-09-18 10:17:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-09-18 10:17:41,702 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:17:41,702 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:17:41,703 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:17:41,703 INFO L82 PathProgramCache]: Analyzing trace with hash -553690579, now seen corresponding path program 1 times [2018-09-18 10:17:41,703 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:17:41,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:41,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:41,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:41,705 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:17:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:42,123 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:17:42,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:17:42,123 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:17:42,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:17:42,126 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:17:42,126 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:17:42,126 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-09-18 10:17:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:17:44,039 INFO L93 Difference]: Finished difference Result 1473 states and 2496 transitions. [2018-09-18 10:17:44,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:17:44,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-09-18 10:17:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:17:44,055 INFO L225 Difference]: With dead ends: 1473 [2018-09-18 10:17:44,055 INFO L226 Difference]: Without dead ends: 954 [2018-09-18 10:17:44,059 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:17:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-09-18 10:17:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 952. [2018-09-18 10:17:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-09-18 10:17:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1496 transitions. [2018-09-18 10:17:44,104 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1496 transitions. Word has length 181 [2018-09-18 10:17:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:17:44,105 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 1496 transitions. [2018-09-18 10:17:44,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:17:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1496 transitions. [2018-09-18 10:17:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-18 10:17:44,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:17:44,113 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:17:44,113 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:17:44,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1994788873, now seen corresponding path program 1 times [2018-09-18 10:17:44,113 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:17:44,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:44,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:44,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:44,115 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:17:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:44,468 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:17:44,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:17:44,469 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:17:44,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:17:44,470 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:17:44,470 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:17:44,473 INFO L87 Difference]: Start difference. First operand 952 states and 1496 transitions. Second operand 3 states. [2018-09-18 10:17:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:17:47,821 INFO L93 Difference]: Finished difference Result 2749 states and 4435 transitions. [2018-09-18 10:17:47,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:17:47,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-09-18 10:17:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:17:47,840 INFO L225 Difference]: With dead ends: 2749 [2018-09-18 10:17:47,840 INFO L226 Difference]: Without dead ends: 1803 [2018-09-18 10:17:47,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:17:47,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-09-18 10:17:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-09-18 10:17:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-09-18 10:17:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2786 transitions. [2018-09-18 10:17:47,925 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2786 transitions. Word has length 183 [2018-09-18 10:17:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:17:47,925 INFO L480 AbstractCegarLoop]: Abstraction has 1786 states and 2786 transitions. [2018-09-18 10:17:47,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:17:47,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2786 transitions. [2018-09-18 10:17:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-18 10:17:47,936 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:17:47,936 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:17:47,937 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:17:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2119210880, now seen corresponding path program 1 times [2018-09-18 10:17:47,937 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:17:47,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:47,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:47,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:47,939 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:17:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:48,171 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:17:48,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:17:48,172 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:17:48,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:17:48,173 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:17:48,173 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:17:48,173 INFO L87 Difference]: Start difference. First operand 1786 states and 2786 transitions. Second operand 6 states. [2018-09-18 10:17:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:17:51,403 INFO L93 Difference]: Finished difference Result 5451 states and 9148 transitions. [2018-09-18 10:17:51,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 10:17:51,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-09-18 10:17:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:17:51,450 INFO L225 Difference]: With dead ends: 5451 [2018-09-18 10:17:51,451 INFO L226 Difference]: Without dead ends: 3671 [2018-09-18 10:17:51,461 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:17:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2018-09-18 10:17:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3579. [2018-09-18 10:17:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2018-09-18 10:17:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5696 transitions. [2018-09-18 10:17:51,653 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5696 transitions. Word has length 186 [2018-09-18 10:17:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:17:51,653 INFO L480 AbstractCegarLoop]: Abstraction has 3579 states and 5696 transitions. [2018-09-18 10:17:51,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:17:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5696 transitions. [2018-09-18 10:17:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-18 10:17:51,669 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:17:51,670 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 10:17:51,670 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:17:51,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2107273996, now seen corresponding path program 1 times [2018-09-18 10:17:51,670 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:17:51,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:51,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:51,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:17:51,672 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:17:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:52,101 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:17:52,101 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 10:17:52,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:52,112 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:17:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:52,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:17:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:52,643 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:17:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:53,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:17:53,628 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 10:17:53,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:17:53,656 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:17:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:17:54,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:17:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:54,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:17:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:17:54,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:17:54,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 13 [2018-09-18 10:17:54,420 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:17:54,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-18 10:17:54,421 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-18 10:17:54,421 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:17:54,421 INFO L87 Difference]: Start difference. First operand 3579 states and 5696 transitions. Second operand 8 states. [2018-09-18 10:18:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:18:01,929 INFO L93 Difference]: Finished difference Result 17778 states and 34562 transitions. [2018-09-18 10:18:01,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 10:18:01,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2018-09-18 10:18:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:18:02,074 INFO L225 Difference]: With dead ends: 17778 [2018-09-18 10:18:02,074 INFO L226 Difference]: Without dead ends: 14205 [2018-09-18 10:18:02,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 774 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:18:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14205 states. [2018-09-18 10:18:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14205 to 14045. [2018-09-18 10:18:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14045 states. [2018-09-18 10:18:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 23239 transitions. [2018-09-18 10:18:02,860 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 23239 transitions. Word has length 195 [2018-09-18 10:18:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:18:02,861 INFO L480 AbstractCegarLoop]: Abstraction has 14045 states and 23239 transitions. [2018-09-18 10:18:02,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-18 10:18:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 23239 transitions. [2018-09-18 10:18:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-09-18 10:18:02,939 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:18:02,939 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:02,940 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:18:02,940 INFO L82 PathProgramCache]: Analyzing trace with hash 241555176, now seen corresponding path program 1 times [2018-09-18 10:18:02,940 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:18:02,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:02,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:02,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:02,942 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:18:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:03,209 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-18 10:18:03,563 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 10:18:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:18:03,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:03,893 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 10:18:03,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:03,907 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:04,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:18:04,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:18:04,375 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:18:04,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-18 10:18:04,378 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:18:04,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:18:04,379 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:18:04,379 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:18:04,380 INFO L87 Difference]: Start difference. First operand 14045 states and 23239 transitions. Second operand 5 states. [2018-09-18 10:18:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:18:07,701 INFO L93 Difference]: Finished difference Result 29153 states and 50414 transitions. [2018-09-18 10:18:07,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:18:07,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2018-09-18 10:18:07,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:18:07,805 INFO L225 Difference]: With dead ends: 29153 [2018-09-18 10:18:07,806 INFO L226 Difference]: Without dead ends: 15114 [2018-09-18 10:18:07,881 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 388 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:18:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15114 states. [2018-09-18 10:18:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15114 to 14853. [2018-09-18 10:18:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14853 states. [2018-09-18 10:18:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14853 states to 14853 states and 22316 transitions. [2018-09-18 10:18:08,562 INFO L78 Accepts]: Start accepts. Automaton has 14853 states and 22316 transitions. Word has length 197 [2018-09-18 10:18:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:18:08,563 INFO L480 AbstractCegarLoop]: Abstraction has 14853 states and 22316 transitions. [2018-09-18 10:18:08,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:18:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 14853 states and 22316 transitions. [2018-09-18 10:18:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-18 10:18:08,620 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:18:08,621 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:08,621 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:18:08,621 INFO L82 PathProgramCache]: Analyzing trace with hash 415029848, now seen corresponding path program 1 times [2018-09-18 10:18:08,621 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:18:08,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:08,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:08,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:08,623 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:18:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:08,885 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:18:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:18:09,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:09,245 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 10:18:09,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:09,259 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 10:18:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:09,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:18:09,836 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:10,046 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 10:18:10,156 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 10:18:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:18:10,317 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:18:10,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:18:10,317 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:18:10,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:18:10,318 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:18:10,318 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:18:10,320 INFO L87 Difference]: Start difference. First operand 14853 states and 22316 transitions. Second operand 5 states. [2018-09-18 10:18:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:18:12,566 INFO L93 Difference]: Finished difference Result 26933 states and 41280 transitions. [2018-09-18 10:18:12,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:18:12,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-09-18 10:18:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:18:12,655 INFO L225 Difference]: With dead ends: 26933 [2018-09-18 10:18:12,655 INFO L226 Difference]: Without dead ends: 15545 [2018-09-18 10:18:12,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 404 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:18:12,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15545 states. [2018-09-18 10:18:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15545 to 14987. [2018-09-18 10:18:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14987 states. [2018-09-18 10:18:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14987 states to 14987 states and 21959 transitions. [2018-09-18 10:18:13,162 INFO L78 Accepts]: Start accepts. Automaton has 14987 states and 21959 transitions. Word has length 205 [2018-09-18 10:18:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:18:13,163 INFO L480 AbstractCegarLoop]: Abstraction has 14987 states and 21959 transitions. [2018-09-18 10:18:13,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:18:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 14987 states and 21959 transitions. [2018-09-18 10:18:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-18 10:18:13,203 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:18:13,204 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:13,204 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:18:13,204 INFO L82 PathProgramCache]: Analyzing trace with hash 925376003, now seen corresponding path program 1 times [2018-09-18 10:18:13,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:18:13,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:13,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:13,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:13,206 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:18:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:13,470 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:18:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:18:13,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:13,731 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:18:13,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:13,741 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:13,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-18 10:18:14,250 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:18:14,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:18:14,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:18:14,403 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:18:14,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:18:14,404 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:18:14,404 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:18:14,404 INFO L87 Difference]: Start difference. First operand 14987 states and 21959 transitions. Second operand 5 states. [2018-09-18 10:18:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:18:16,399 INFO L93 Difference]: Finished difference Result 30120 states and 44620 transitions. [2018-09-18 10:18:16,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:18:16,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2018-09-18 10:18:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:18:16,473 INFO L225 Difference]: With dead ends: 30120 [2018-09-18 10:18:16,473 INFO L226 Difference]: Without dead ends: 15184 [2018-09-18 10:18:16,515 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 422 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:18:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15184 states. [2018-09-18 10:18:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15184 to 14990. [2018-09-18 10:18:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14990 states. [2018-09-18 10:18:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14990 states to 14990 states and 20490 transitions. [2018-09-18 10:18:16,918 INFO L78 Accepts]: Start accepts. Automaton has 14990 states and 20490 transitions. Word has length 214 [2018-09-18 10:18:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:18:16,919 INFO L480 AbstractCegarLoop]: Abstraction has 14990 states and 20490 transitions. [2018-09-18 10:18:16,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:18:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 14990 states and 20490 transitions. [2018-09-18 10:18:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-18 10:18:16,944 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:18:16,945 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:16,945 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:18:16,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1728558344, now seen corresponding path program 1 times [2018-09-18 10:18:16,946 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:18:16,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:16,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:16,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:16,947 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:18:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:18:17,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:17,274 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 10:18:17,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:17,282 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:17,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:18:17,529 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:18:17,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:17,699 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 10:18:17,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:17,714 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:18,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:18:18,219 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-18 10:18:18,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:18:18,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-18 10:18:18,317 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:18:18,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:18:18,318 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:18:18,319 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:18:18,319 INFO L87 Difference]: Start difference. First operand 14990 states and 20490 transitions. Second operand 9 states. [2018-09-18 10:18:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:18:21,409 INFO L93 Difference]: Finished difference Result 41347 states and 58116 transitions. [2018-09-18 10:18:21,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 10:18:21,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2018-09-18 10:18:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:18:21,532 INFO L225 Difference]: With dead ends: 41347 [2018-09-18 10:18:21,532 INFO L226 Difference]: Without dead ends: 26363 [2018-09-18 10:18:21,598 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2018-09-18 10:18:21,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26363 states. [2018-09-18 10:18:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26363 to 23104. [2018-09-18 10:18:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23104 states. [2018-09-18 10:18:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23104 states to 23104 states and 30332 transitions. [2018-09-18 10:18:22,274 INFO L78 Accepts]: Start accepts. Automaton has 23104 states and 30332 transitions. Word has length 220 [2018-09-18 10:18:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:18:22,274 INFO L480 AbstractCegarLoop]: Abstraction has 23104 states and 30332 transitions. [2018-09-18 10:18:22,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:18:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 23104 states and 30332 transitions. [2018-09-18 10:18:22,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-18 10:18:22,304 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:18:22,304 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:22,305 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:18:22,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1944408816, now seen corresponding path program 1 times [2018-09-18 10:18:22,305 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:18:22,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:22,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:22,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:22,306 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:18:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:18:22,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:22,558 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 10:18:22,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:22,571 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:22,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:18:23,019 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:18:23,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:23,133 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 10:18:23,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:23,149 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:23,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:18:23,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:18:23,842 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:18:23,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-18 10:18:23,843 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:18:23,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:18:23,844 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:18:23,844 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:18:23,845 INFO L87 Difference]: Start difference. First operand 23104 states and 30332 transitions. Second operand 9 states. [2018-09-18 10:18:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:18:36,417 INFO L93 Difference]: Finished difference Result 147733 states and 240680 transitions. [2018-09-18 10:18:36,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-18 10:18:36,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2018-09-18 10:18:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:18:37,375 INFO L225 Difference]: With dead ends: 147733 [2018-09-18 10:18:37,375 INFO L226 Difference]: Without dead ends: 124650 [2018-09-18 10:18:37,633 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 984 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=328, Invalid=1478, Unknown=0, NotChecked=0, Total=1806 [2018-09-18 10:18:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124650 states. [2018-09-18 10:18:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124650 to 117232. [2018-09-18 10:18:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117232 states. [2018-09-18 10:18:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117232 states to 117232 states and 152899 transitions. [2018-09-18 10:18:42,499 INFO L78 Accepts]: Start accepts. Automaton has 117232 states and 152899 transitions. Word has length 243 [2018-09-18 10:18:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:18:42,500 INFO L480 AbstractCegarLoop]: Abstraction has 117232 states and 152899 transitions. [2018-09-18 10:18:42,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:18:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 117232 states and 152899 transitions. [2018-09-18 10:18:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-18 10:18:42,670 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:18:42,670 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:42,670 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:18:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1641990107, now seen corresponding path program 1 times [2018-09-18 10:18:42,671 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:18:42,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:42,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:42,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:18:42,672 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:18:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:43,296 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 10:18:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:18:43,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:43,799 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 10:18:43,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:43,809 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:44,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:18:44,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:18:44,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:18:44,280 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 10:18:44,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:18:44,296 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:18:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:18:44,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:18:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:18:45,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:18:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:18:45,764 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:18:45,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 21 [2018-09-18 10:18:45,764 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:18:45,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 10:18:45,765 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 10:18:45,765 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2018-09-18 10:18:45,765 INFO L87 Difference]: Start difference. First operand 117232 states and 152899 transitions. Second operand 13 states. [2018-09-18 10:20:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:20:09,355 INFO L93 Difference]: Finished difference Result 1129247 states and 2054231 transitions. [2018-09-18 10:20:09,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-18 10:20:09,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 288 [2018-09-18 10:20:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:20:19,981 INFO L225 Difference]: With dead ends: 1129247 [2018-09-18 10:20:19,981 INFO L226 Difference]: Without dead ends: 1017085 [2018-09-18 10:20:22,316 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1231 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8008 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2498, Invalid=17808, Unknown=0, NotChecked=0, Total=20306 [2018-09-18 10:20:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017085 states.