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/Problem05_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:23:40,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:23:40,406 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:23:40,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:23:40,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:23:40,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:23:40,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:23:40,423 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:23:40,424 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:23:40,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:23:40,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:23:40,427 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:23:40,428 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:23:40,429 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:23:40,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:23:40,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:23:40,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:23:40,433 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:23:40,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:23:40,437 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:23:40,438 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:23:40,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:23:40,442 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:23:40,442 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:23:40,442 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:23:40,443 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:23:40,444 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:23:40,445 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:23:40,446 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:23:40,447 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:23:40,448 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:23:40,448 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:23:40,449 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:23:40,449 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:23:40,450 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:23:40,453 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:23:40,453 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 16:23:40,481 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:23:40,482 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:23:40,483 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:23:40,483 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:23:40,483 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:23:40,483 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:23:40,484 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:23:40,484 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:23:40,484 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:23:40,484 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:23:40,484 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:23:40,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:23:40,485 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:23:40,485 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:23:40,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:23:40,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:23:40,487 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:23:40,487 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:23:40,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:23:40,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:23:40,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:23:40,488 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:23:40,488 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:23:40,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:23:40,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:23:40,490 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:23:40,490 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:23:40,490 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:23:40,490 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:23:40,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:23:40,491 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:23:40,491 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:23:40,491 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:23:40,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:23:40,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:23:40,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:23:40,571 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:23:40,572 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:23:40,573 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label43_true-unreach-call.c [2018-09-14 16:23:40,915 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020b1717e/553d8852266c4024b9e9bc68260584dc/FLAGf69aca3ad [2018-09-14 16:23:41,571 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:23:41,572 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label43_true-unreach-call.c [2018-09-14 16:23:41,620 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020b1717e/553d8852266c4024b9e9bc68260584dc/FLAGf69aca3ad [2018-09-14 16:23:41,640 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020b1717e/553d8852266c4024b9e9bc68260584dc [2018-09-14 16:23:41,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:23:41,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:23:41,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:23:41,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:23:41,671 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:23:41,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:23:41" (1/1) ... [2018-09-14 16:23:41,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5529ba08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:41, skipping insertion in model container [2018-09-14 16:23:41,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:23:41" (1/1) ... [2018-09-14 16:23:41,689 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:23:43,832 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:23:43,851 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:23:44,984 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:23:45,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45 WrapperNode [2018-09-14 16:23:45,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:23:45,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:23:45,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:23:45,492 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:23:45,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:45,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:45,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:23:45,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:23:45,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:23:45,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:23:46,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:46,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:46,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:46,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:46,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:46,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:46,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... [2018-09-14 16:23:46,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:23:46,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:23:46,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:23:46,942 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:23:46,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:23:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:23:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:23:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2018-09-14 16:23:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2018-09-14 16:23:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:23:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:23:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2018-09-14 16:23:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2018-09-14 16:23:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 16:23:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 16:23:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 16:23:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 16:23:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:23:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:23:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:23:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:23:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:23:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:23:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:23:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:23:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:23:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:24:02,177 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:24:02,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:24:02 BoogieIcfgContainer [2018-09-14 16:24:02,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:24:02,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:24:02,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:24:02,182 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:24:02,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:23:41" (1/3) ... [2018-09-14 16:24:02,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6622a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:24:02, skipping insertion in model container [2018-09-14 16:24:02,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:23:45" (2/3) ... [2018-09-14 16:24:02,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6622a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:24:02, skipping insertion in model container [2018-09-14 16:24:02,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:24:02" (3/3) ... [2018-09-14 16:24:02,186 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43_true-unreach-call.c [2018-09-14 16:24:02,197 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:24:02,208 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:24:02,281 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:24:02,282 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:24:02,282 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:24:02,282 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:24:02,282 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:24:02,282 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:24:02,282 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:24:02,283 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:24:02,283 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:24:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states. [2018-09-14 16:24:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2018-09-14 16:24:02,462 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:24:02,465 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:24:02,467 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:24:02,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1435912645, now seen corresponding path program 1 times [2018-09-14 16:24:02,477 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:24:02,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:02,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:24:02,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:02,537 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:24:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:24:05,185 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:24:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:24:08,367 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:24:08,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:24:08,367 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:24:08,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:24:08,392 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:24:08,392 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:24:08,394 INFO L87 Difference]: Start difference. First operand 2223 states. Second operand 3 states. [2018-09-14 16:24:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:24:22,024 INFO L93 Difference]: Finished difference Result 6299 states and 11882 transitions. [2018-09-14 16:24:22,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:24:22,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1706 [2018-09-14 16:24:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:24:22,111 INFO L225 Difference]: With dead ends: 6299 [2018-09-14 16:24:22,111 INFO L226 Difference]: Without dead ends: 4074 [2018-09-14 16:24:22,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 9 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:24:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2018-09-14 16:24:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4011. [2018-09-14 16:24:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4011 states. [2018-09-14 16:24:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 7482 transitions. [2018-09-14 16:24:22,354 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 7482 transitions. Word has length 1706 [2018-09-14 16:24:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:24:22,365 INFO L480 AbstractCegarLoop]: Abstraction has 4011 states and 7482 transitions. [2018-09-14 16:24:22,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:24:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 7482 transitions. [2018-09-14 16:24:22,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1734 [2018-09-14 16:24:22,475 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:24:22,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:24:22,477 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:24:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash 705524367, now seen corresponding path program 1 times [2018-09-14 16:24:22,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:24:22,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:22,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:24:22,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:22,484 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:24:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:24:23,003 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:24:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:24:24,417 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:24:24,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:24:24,418 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:24:24,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:24:24,422 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:24:24,422 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:24:24,423 INFO L87 Difference]: Start difference. First operand 4011 states and 7482 transitions. Second operand 6 states. [2018-09-14 16:24:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:24:41,718 INFO L93 Difference]: Finished difference Result 11745 states and 22165 transitions. [2018-09-14 16:24:41,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:24:41,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1733 [2018-09-14 16:24:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:24:41,783 INFO L225 Difference]: With dead ends: 11745 [2018-09-14 16:24:41,784 INFO L226 Difference]: Without dead ends: 7740 [2018-09-14 16:24:41,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:24:41,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7740 states. [2018-09-14 16:24:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7740 to 7658. [2018-09-14 16:24:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7658 states. [2018-09-14 16:24:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 13563 transitions. [2018-09-14 16:24:42,062 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 13563 transitions. Word has length 1733 [2018-09-14 16:24:42,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:24:42,063 INFO L480 AbstractCegarLoop]: Abstraction has 7658 states and 13563 transitions. [2018-09-14 16:24:42,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:24:42,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 13563 transitions. [2018-09-14 16:24:42,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2018-09-14 16:24:42,141 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:24:42,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:24:42,143 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:24:42,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1828044054, now seen corresponding path program 1 times [2018-09-14 16:24:42,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:24:42,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:42,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:24:42,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:42,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:24:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:24:42,644 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:24:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:24:44,946 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:24:44,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:24:44,947 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:24:44,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:24:44,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:24:44,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:24:44,951 INFO L87 Difference]: Start difference. First operand 7658 states and 13563 transitions. Second operand 6 states. [2018-09-14 16:24:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:24:57,767 INFO L93 Difference]: Finished difference Result 22949 states and 41673 transitions. [2018-09-14 16:24:57,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:24:57,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1738 [2018-09-14 16:24:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:24:57,843 INFO L225 Difference]: With dead ends: 22949 [2018-09-14 16:24:57,843 INFO L226 Difference]: Without dead ends: 15297 [2018-09-14 16:24:57,865 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:24:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15297 states. [2018-09-14 16:24:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15297 to 15091. [2018-09-14 16:24:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15091 states. [2018-09-14 16:24:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 26321 transitions. [2018-09-14 16:24:58,231 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 26321 transitions. Word has length 1738 [2018-09-14 16:24:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:24:58,231 INFO L480 AbstractCegarLoop]: Abstraction has 15091 states and 26321 transitions. [2018-09-14 16:24:58,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:24:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 26321 transitions. [2018-09-14 16:24:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1750 [2018-09-14 16:24:58,300 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:24:58,302 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:24:58,302 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:24:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash -125241341, now seen corresponding path program 1 times [2018-09-14 16:24:58,303 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:24:58,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:58,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:24:58,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:24:58,304 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:24:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:24:58,696 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:24:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:24:59,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:24:59,843 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:24:59,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:24:59,860 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:25:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:25:00,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:25:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-14 16:25:01,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:25:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:25:03,404 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:25:03,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-14 16:25:03,405 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:25:03,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:25:03,408 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:25:03,408 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:25:03,409 INFO L87 Difference]: Start difference. First operand 15091 states and 26321 transitions. Second operand 5 states. [2018-09-14 16:25:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:25:17,794 INFO L93 Difference]: Finished difference Result 37735 states and 66506 transitions. [2018-09-14 16:25:17,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:25:17,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1749 [2018-09-14 16:25:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:25:17,937 INFO L225 Difference]: With dead ends: 37735 [2018-09-14 16:25:17,937 INFO L226 Difference]: Without dead ends: 22650 [2018-09-14 16:25:17,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3506 GetRequests, 3492 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:25:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22650 states. [2018-09-14 16:25:18,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22650 to 22618. [2018-09-14 16:25:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22618 states. [2018-09-14 16:25:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22618 states to 22618 states and 38042 transitions. [2018-09-14 16:25:18,586 INFO L78 Accepts]: Start accepts. Automaton has 22618 states and 38042 transitions. Word has length 1749 [2018-09-14 16:25:18,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:25:18,587 INFO L480 AbstractCegarLoop]: Abstraction has 22618 states and 38042 transitions. [2018-09-14 16:25:18,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:25:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 22618 states and 38042 transitions. [2018-09-14 16:25:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1753 [2018-09-14 16:25:18,704 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:25:18,708 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:25:18,708 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:25:18,711 INFO L82 PathProgramCache]: Analyzing trace with hash -325641722, now seen corresponding path program 1 times [2018-09-14 16:25:18,712 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:25:18,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:25:18,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:25:18,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:25:18,713 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:25:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:25:19,105 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:25:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:25:20,980 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:25:20,980 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:25:20,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:25:20,994 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:25:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:25:21,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:25:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-09-14 16:25:22,843 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:25:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-14 16:25:24,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:25:24,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-09-14 16:25:24,388 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:25:24,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:25:24,390 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:25:24,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:25:24,390 INFO L87 Difference]: Start difference. First operand 22618 states and 38042 transitions. Second operand 3 states. [2018-09-14 16:25:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:25:35,112 INFO L93 Difference]: Finished difference Result 56202 states and 98218 transitions. [2018-09-14 16:25:35,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:25:35,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1752 [2018-09-14 16:25:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:25:35,270 INFO L225 Difference]: With dead ends: 56202 [2018-09-14 16:25:35,270 INFO L226 Difference]: Without dead ends: 33590 [2018-09-14 16:25:35,344 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3510 GetRequests, 3503 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:25:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33590 states. [2018-09-14 16:25:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33590 to 33504. [2018-09-14 16:25:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33504 states. [2018-09-14 16:25:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33504 states to 33504 states and 52386 transitions. [2018-09-14 16:25:36,290 INFO L78 Accepts]: Start accepts. Automaton has 33504 states and 52386 transitions. Word has length 1752 [2018-09-14 16:25:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:25:36,291 INFO L480 AbstractCegarLoop]: Abstraction has 33504 states and 52386 transitions. [2018-09-14 16:25:36,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:25:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 33504 states and 52386 transitions. [2018-09-14 16:25:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1758 [2018-09-14 16:25:36,403 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:25:36,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:25:36,404 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:25:36,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1505422540, now seen corresponding path program 1 times [2018-09-14 16:25:36,405 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:25:36,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:25:36,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:25:36,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:25:36,408 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:25:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:25:36,787 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:25:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:25:38,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:25:38,409 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:25:38,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:25:38,418 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:25:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:25:38,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:25:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-14 16:25:40,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:25:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:25:41,813 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:25:41,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:25:41,814 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:25:41,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:25:41,816 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:25:41,816 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:25:41,816 INFO L87 Difference]: Start difference. First operand 33504 states and 52386 transitions. Second operand 5 states. [2018-09-14 16:25:56,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:25:56,031 INFO L93 Difference]: Finished difference Result 85285 states and 143427 transitions. [2018-09-14 16:25:56,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:25:56,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1757 [2018-09-14 16:25:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:25:56,261 INFO L225 Difference]: With dead ends: 85285 [2018-09-14 16:25:56,261 INFO L226 Difference]: Without dead ends: 51787 [2018-09-14 16:25:56,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3523 GetRequests, 3508 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:25:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51787 states. [2018-09-14 16:25:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51787 to 51249. [2018-09-14 16:25:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51249 states. [2018-09-14 16:25:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51249 states to 51249 states and 77146 transitions. [2018-09-14 16:25:57,450 INFO L78 Accepts]: Start accepts. Automaton has 51249 states and 77146 transitions. Word has length 1757 [2018-09-14 16:25:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:25:57,451 INFO L480 AbstractCegarLoop]: Abstraction has 51249 states and 77146 transitions. [2018-09-14 16:25:57,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:25:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 51249 states and 77146 transitions. [2018-09-14 16:25:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1763 [2018-09-14 16:25:57,593 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:25:57,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:25:57,595 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:25:57,596 INFO L82 PathProgramCache]: Analyzing trace with hash -699161659, now seen corresponding path program 1 times [2018-09-14 16:25:57,596 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:25:57,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:25:57,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:25:57,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:25:57,598 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:25:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:25:57,999 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:26:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:26:00,014 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:26:00,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:26:00,015 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:26:00,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:26:00,016 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:26:00,016 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:26:00,017 INFO L87 Difference]: Start difference. First operand 51249 states and 77146 transitions. Second operand 6 states. [2018-09-14 16:26:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:26:12,735 INFO L93 Difference]: Finished difference Result 120222 states and 190217 transitions. [2018-09-14 16:26:12,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:26:12,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1762 [2018-09-14 16:26:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:26:13,019 INFO L225 Difference]: With dead ends: 120222 [2018-09-14 16:26:13,020 INFO L226 Difference]: Without dead ends: 68979 [2018-09-14 16:26:13,135 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:26:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68979 states. [2018-09-14 16:26:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68979 to 68588. [2018-09-14 16:26:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68588 states. [2018-09-14 16:26:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68588 states to 68588 states and 101698 transitions. [2018-09-14 16:26:15,163 INFO L78 Accepts]: Start accepts. Automaton has 68588 states and 101698 transitions. Word has length 1762 [2018-09-14 16:26:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:26:15,163 INFO L480 AbstractCegarLoop]: Abstraction has 68588 states and 101698 transitions. [2018-09-14 16:26:15,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:26:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 68588 states and 101698 transitions. [2018-09-14 16:26:15,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1779 [2018-09-14 16:26:15,376 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:26:15,378 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:26:15,378 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:26:15,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1668210213, now seen corresponding path program 1 times [2018-09-14 16:26:15,379 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:26:15,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:26:15,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:26:15,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:26:15,380 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:26:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:26:15,831 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:26:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:26:17,884 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:26:17,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:26:17,885 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:26:17,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:26:17,886 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:26:17,886 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:26:17,886 INFO L87 Difference]: Start difference. First operand 68588 states and 101698 transitions. Second operand 6 states. [2018-09-14 16:26:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:26:32,157 INFO L93 Difference]: Finished difference Result 204947 states and 347364 transitions. [2018-09-14 16:26:32,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:26:32,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1778 [2018-09-14 16:26:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:26:32,834 INFO L225 Difference]: With dead ends: 204947 [2018-09-14 16:26:32,834 INFO L226 Difference]: Without dead ends: 136365 [2018-09-14 16:26:33,004 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:26:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136365 states. [2018-09-14 16:26:36,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136365 to 135490. [2018-09-14 16:26:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135490 states. [2018-09-14 16:26:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135490 states to 135490 states and 214192 transitions. [2018-09-14 16:26:36,999 INFO L78 Accepts]: Start accepts. Automaton has 135490 states and 214192 transitions. Word has length 1778 [2018-09-14 16:26:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:26:36,999 INFO L480 AbstractCegarLoop]: Abstraction has 135490 states and 214192 transitions. [2018-09-14 16:26:36,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:26:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 135490 states and 214192 transitions. [2018-09-14 16:26:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1923 [2018-09-14 16:26:37,415 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:26:37,416 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:26:37,417 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:26:37,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1866447889, now seen corresponding path program 1 times [2018-09-14 16:26:37,418 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:26:37,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:26:37,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:26:37,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:26:37,419 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:26:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:26:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 224 proven. 24 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 16:26:43,672 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:26:43,672 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:26:43,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:26:43,681 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:26:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:26:44,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:26:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-09-14 16:26:45,716 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:26:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 224 proven. 24 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 16:26:46,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:26:46,921 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:26:46,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:26:46,937 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:26:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:26:48,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:26:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-09-14 16:26:50,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:26:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 224 proven. 24 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 16:26:52,073 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:26:52,075 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 16:26:52,075 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:26:52,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:26:52,077 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:26:52,077 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:26:52,078 INFO L87 Difference]: Start difference. First operand 135490 states and 214192 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 16:27:13,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-14 16:27:13,615 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:27:13,619 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:27:13,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:27:13 BoogieIcfgContainer [2018-09-14 16:27:13,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:27:13,621 INFO L168 Benchmark]: Toolchain (without parser) took 211966.18 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 745.5 MB. Max. memory is 7.1 GB. [2018-09-14 16:27:13,622 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:27:13,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3830.45 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 210.2 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -239.3 MB). Peak memory consumption was 464.1 MB. Max. memory is 7.1 GB. [2018-09-14 16:27:13,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 200.01 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2018-09-14 16:27:13,624 INFO L168 Benchmark]: Boogie Preprocessor took 1249.42 ms. Allocated memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: 639.6 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -621.2 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. [2018-09-14 16:27:13,625 INFO L168 Benchmark]: RCFGBuilder took 15235.83 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 339.2 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 235.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 16:27:13,626 INFO L168 Benchmark]: TraceAbstraction took 191441.35 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 160.1 MB. Max. memory is 7.1 GB. [2018-09-14 16:27:13,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3830.45 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 210.2 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -239.3 MB). Peak memory consumption was 464.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 200.01 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1249.42 ms. Allocated memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: 639.6 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -621.2 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15235.83 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 339.2 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 235.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 191441.35 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 160.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 11099]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 11099). Cancelled while BasicCegarLoop was constructing difference of abstraction (135490states) and FLOYD_HOARE automaton (currently 32 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (228871 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 2223 locations, 1 error locations. TIMEOUT Result, 191.3s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 133.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9683 SDtfs, 64998 SDslu, 7244 SDs, 0 SdLazy, 88079 SolverSat, 29142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18338 GetRequests, 18218 SyntacticMatches, 24 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135490occurred in iteration=8, 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: 9.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 2273 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 22.6s InterpolantComputationTime, 24999 NumberOfCodeBlocks, 24999 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 34082 ConstructedInterpolants, 0 QuantifiedInterpolants, 73299220 SizeOfPredicates, 4 NumberOfNonLiveVariables, 11597 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 2237/2367 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/Problem05_label43_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-27-13-648.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem05_label43_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-27-13-648.csv Completed graceful shutdown