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/Problem06_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:35:11,420 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:35:11,422 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:35:11,437 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:35:11,438 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:35:11,439 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:35:11,440 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:35:11,442 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:35:11,445 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:35:11,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:35:11,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:35:11,453 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:35:11,454 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:35:11,455 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:35:11,459 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:35:11,460 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:35:11,461 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:35:11,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:35:11,468 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:35:11,470 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:35:11,472 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:35:11,473 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:35:11,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:35:11,476 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:35:11,476 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:35:11,480 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:35:11,481 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:35:11,482 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:35:11,483 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:35:11,486 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:35:11,488 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:35:11,489 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:35:11,489 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:35:11,491 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:35:11,492 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:35:11,494 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:35:11,494 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 16:35:11,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:35:11,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:35:11,514 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:35:11,515 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:35:11,516 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:35:11,516 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:35:11,516 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:35:11,516 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:35:11,516 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:35:11,517 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:35:11,517 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:35:11,518 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:35:11,518 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:35:11,518 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:35:11,518 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:35:11,518 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:35:11,519 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:35:11,519 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:35:11,519 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:35:11,519 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:35:11,519 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:35:11,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:35:11,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:35:11,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:35:11,520 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:35:11,522 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:35:11,522 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:35:11,522 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:35:11,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:35:11,523 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:35:11,523 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:35:11,523 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:35:11,523 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:35:11,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:35:11,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:35:11,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:35:11,604 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:35:11,604 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:35:11,605 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label57_true-unreach-call.c [2018-09-14 16:35:11,965 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4dfacc8/3e9e230b3a814b9f8328fb094683915f/FLAG1873375ba [2018-09-14 16:35:12,593 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:35:12,594 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label57_true-unreach-call.c [2018-09-14 16:35:12,645 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4dfacc8/3e9e230b3a814b9f8328fb094683915f/FLAG1873375ba [2018-09-14 16:35:12,668 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4dfacc8/3e9e230b3a814b9f8328fb094683915f [2018-09-14 16:35:12,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:35:12,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:35:12,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:35:12,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:35:12,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:35:12,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:35:12" (1/1) ... [2018-09-14 16:35:12,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d32f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:12, skipping insertion in model container [2018-09-14 16:35:12,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:35:12" (1/1) ... [2018-09-14 16:35:12,715 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:35:14,810 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:35:14,830 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:35:16,062 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:35:16,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16 WrapperNode [2018-09-14 16:35:16,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:35:16,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:35:16,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:35:16,384 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:35:16,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:16,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:16,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:35:16,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:35:16,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:35:16,759 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:35:17,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:17,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:17,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:17,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:17,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:17,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:17,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (1/1) ... [2018-09-14 16:35:17,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:35:17,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:35:17,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:35:17,826 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:35:17,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (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 16:35:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:35:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:35:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 16:35:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 16:35:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:35:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:35:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:35:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:35:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:35:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:35:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:35:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:35:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:35:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:35:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:35:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:35:30,079 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:35:30,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:35:30 BoogieIcfgContainer [2018-09-14 16:35:30,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:35:30,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:35:30,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:35:30,085 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:35:30,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:35:12" (1/3) ... [2018-09-14 16:35:30,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bc31a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:35:30, skipping insertion in model container [2018-09-14 16:35:30,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:35:16" (2/3) ... [2018-09-14 16:35:30,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bc31a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:35:30, skipping insertion in model container [2018-09-14 16:35:30,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:35:30" (3/3) ... [2018-09-14 16:35:30,089 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label57_true-unreach-call.c [2018-09-14 16:35:30,099 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:35:30,110 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:35:30,178 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:35:30,179 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:35:30,179 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:35:30,180 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:35:30,180 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:35:30,180 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:35:30,180 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:35:30,180 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:35:30,180 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:35:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states. [2018-09-14 16:35:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-09-14 16:35:30,309 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:35:30,311 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:30,312 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:35:30,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1589348328, now seen corresponding path program 1 times [2018-09-14 16:35:30,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:35:30,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:30,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:30,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:30,373 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:35:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:32,752 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:35:34,890 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 16:35:34,892 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:35:34,893 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:35:34,893 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:35:34,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:35:34,914 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:35:34,915 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:35:34,917 INFO L87 Difference]: Start difference. First operand 1316 states. Second operand 3 states. [2018-09-14 16:35:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:35:44,042 INFO L93 Difference]: Finished difference Result 3733 states and 6982 transitions. [2018-09-14 16:35:44,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:35:44,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 988 [2018-09-14 16:35:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:35:44,116 INFO L225 Difference]: With dead ends: 3733 [2018-09-14 16:35:44,116 INFO L226 Difference]: Without dead ends: 2415 [2018-09-14 16:35:44,133 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:35:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2018-09-14 16:35:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2393. [2018-09-14 16:35:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2018-09-14 16:35:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 4243 transitions. [2018-09-14 16:35:44,322 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 4243 transitions. Word has length 988 [2018-09-14 16:35:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:35:44,326 INFO L480 AbstractCegarLoop]: Abstraction has 2393 states and 4243 transitions. [2018-09-14 16:35:44,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:35:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 4243 transitions. [2018-09-14 16:35:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2018-09-14 16:35:44,395 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:35:44,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:44,397 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:35:44,398 INFO L82 PathProgramCache]: Analyzing trace with hash 427757273, now seen corresponding path program 1 times [2018-09-14 16:35:44,399 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:35:44,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:44,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:44,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:44,401 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:35:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:35:46,514 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:35:46,515 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:35:46,515 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:35:46,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:35:46,519 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:35:46,519 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:35:46,519 INFO L87 Difference]: Start difference. First operand 2393 states and 4243 transitions. Second operand 3 states. [2018-09-14 16:35:55,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:35:55,415 INFO L93 Difference]: Finished difference Result 6889 states and 12411 transitions. [2018-09-14 16:35:55,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:35:55,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1017 [2018-09-14 16:35:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:35:55,451 INFO L225 Difference]: With dead ends: 6889 [2018-09-14 16:35:55,451 INFO L226 Difference]: Without dead ends: 4502 [2018-09-14 16:35:55,459 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:35:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2018-09-14 16:35:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4491. [2018-09-14 16:35:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4491 states. [2018-09-14 16:35:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 7452 transitions. [2018-09-14 16:35:55,568 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 7452 transitions. Word has length 1017 [2018-09-14 16:35:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:35:55,570 INFO L480 AbstractCegarLoop]: Abstraction has 4491 states and 7452 transitions. [2018-09-14 16:35:55,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:35:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 7452 transitions. [2018-09-14 16:35:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-09-14 16:35:55,599 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:35:55,600 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:55,600 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:35:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1612378279, now seen corresponding path program 1 times [2018-09-14 16:35:55,601 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:35:55,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:55,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:55,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:55,603 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:35:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:35:56,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:35:56,438 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 16:35:56,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:56,449 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:35:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:56,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:35:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:35:58,404 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:35:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:35:59,212 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:35:59,212 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:35:59,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:59,232 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:36:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:00,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:36:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-14 16:36:01,673 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:36:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-14 16:36:03,305 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-14 16:36:03,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 17 [2018-09-14 16:36:03,306 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:36:03,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:36:03,308 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:36:03,309 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-09-14 16:36:03,309 INFO L87 Difference]: Start difference. First operand 4491 states and 7452 transitions. Second operand 5 states. [2018-09-14 16:36:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:36:15,911 INFO L93 Difference]: Finished difference Result 13506 states and 22865 transitions. [2018-09-14 16:36:15,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:36:15,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1034 [2018-09-14 16:36:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:36:15,961 INFO L225 Difference]: With dead ends: 13506 [2018-09-14 16:36:15,961 INFO L226 Difference]: Without dead ends: 9021 [2018-09-14 16:36:15,977 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4141 GetRequests, 4124 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:36:15,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9021 states. [2018-09-14 16:36:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9021 to 8898. [2018-09-14 16:36:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8898 states. [2018-09-14 16:36:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 13723 transitions. [2018-09-14 16:36:16,271 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 13723 transitions. Word has length 1034 [2018-09-14 16:36:16,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:36:16,271 INFO L480 AbstractCegarLoop]: Abstraction has 8898 states and 13723 transitions. [2018-09-14 16:36:16,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:36:16,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 13723 transitions. [2018-09-14 16:36:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2018-09-14 16:36:16,329 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:36:16,330 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:16,331 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:36:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash 476981322, now seen corresponding path program 1 times [2018-09-14 16:36:16,332 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:36:16,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:36:16,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:16,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:36:16,334 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:36:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:36:17,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:36:17,764 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 16:36:17,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:17,780 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:36:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:18,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:36:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:36:19,624 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:36:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:36:20,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:36:20,673 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:36:20,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:20,701 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:36:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:21,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:36:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:36:22,951 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:36:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:36:23,583 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:36:23,584 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 14 [2018-09-14 16:36:23,584 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:36:23,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:36:23,586 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:36:23,586 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-14 16:36:23,587 INFO L87 Difference]: Start difference. First operand 8898 states and 13723 transitions. Second operand 9 states. [2018-09-14 16:36:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:36:37,629 INFO L93 Difference]: Finished difference Result 22362 states and 36206 transitions. [2018-09-14 16:36:37,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 16:36:37,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1052 [2018-09-14 16:36:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:36:37,707 INFO L225 Difference]: With dead ends: 22362 [2018-09-14 16:36:37,707 INFO L226 Difference]: Without dead ends: 13470 [2018-09-14 16:36:37,739 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4224 GetRequests, 4201 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2018-09-14 16:36:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2018-09-14 16:36:38,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 13232. [2018-09-14 16:36:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13232 states. [2018-09-14 16:36:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13232 states to 13232 states and 20052 transitions. [2018-09-14 16:36:38,108 INFO L78 Accepts]: Start accepts. Automaton has 13232 states and 20052 transitions. Word has length 1052 [2018-09-14 16:36:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:36:38,109 INFO L480 AbstractCegarLoop]: Abstraction has 13232 states and 20052 transitions. [2018-09-14 16:36:38,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:36:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 13232 states and 20052 transitions. [2018-09-14 16:36:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2018-09-14 16:36:38,171 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:36:38,172 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:38,173 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:36:38,173 INFO L82 PathProgramCache]: Analyzing trace with hash -81000687, now seen corresponding path program 1 times [2018-09-14 16:36:38,174 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:36:38,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:36:38,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:38,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:36:38,175 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:36:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:36:39,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:36:39,679 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:36:39,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:39,695 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:36:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:40,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:36:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:36:41,336 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:36:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:36:42,341 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:36:42,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 16:36:42,341 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:36:42,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:36:42,343 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:36:42,343 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:36:42,343 INFO L87 Difference]: Start difference. First operand 13232 states and 20052 transitions. Second operand 3 states. [2018-09-14 16:36:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:36:49,271 INFO L93 Difference]: Finished difference Result 39116 states and 61966 transitions. [2018-09-14 16:36:49,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:36:49,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1059 [2018-09-14 16:36:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:36:49,409 INFO L225 Difference]: With dead ends: 39116 [2018-09-14 16:36:49,409 INFO L226 Difference]: Without dead ends: 25890 [2018-09-14 16:36:49,460 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2123 GetRequests, 2117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:36:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25890 states. [2018-09-14 16:36:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25890 to 25809. [2018-09-14 16:36:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25809 states. [2018-09-14 16:36:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25809 states to 25809 states and 37898 transitions. [2018-09-14 16:36:50,056 INFO L78 Accepts]: Start accepts. Automaton has 25809 states and 37898 transitions. Word has length 1059 [2018-09-14 16:36:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:36:50,058 INFO L480 AbstractCegarLoop]: Abstraction has 25809 states and 37898 transitions. [2018-09-14 16:36:50,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:36:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 25809 states and 37898 transitions. [2018-09-14 16:36:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2018-09-14 16:36:50,172 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:36:50,173 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-09-14 16:36:50,174 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:36:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash -161579593, now seen corresponding path program 1 times [2018-09-14 16:36:50,174 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:36:50,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:36:50,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:50,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:36:50,182 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:36:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:36:51,730 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:36:51,730 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:36:51,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:51,742 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:36:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:52,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:36:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:36:53,452 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:36:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:36:54,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:36:54,161 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:36:54,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:36:54,176 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:36:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:36:55,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:36:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:36:56,487 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:36:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:36:57,004 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:36:57,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 16:36:57,005 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:36:57,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:36:57,007 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:36:57,007 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:36:57,007 INFO L87 Difference]: Start difference. First operand 25809 states and 37898 transitions. Second operand 9 states. [2018-09-14 16:37:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:37:24,315 INFO L93 Difference]: Finished difference Result 105800 states and 215813 transitions. [2018-09-14 16:37:24,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-14 16:37:24,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1075 [2018-09-14 16:37:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:37:24,938 INFO L225 Difference]: With dead ends: 105800 [2018-09-14 16:37:24,938 INFO L226 Difference]: Without dead ends: 79997 [2018-09-14 16:37:25,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4368 GetRequests, 4321 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=442, Invalid=1814, Unknown=0, NotChecked=0, Total=2256 [2018-09-14 16:37:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79997 states. [2018-09-14 16:37:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79997 to 78398. [2018-09-14 16:37:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78398 states. [2018-09-14 16:37:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78398 states to 78398 states and 121958 transitions. [2018-09-14 16:37:27,593 INFO L78 Accepts]: Start accepts. Automaton has 78398 states and 121958 transitions. Word has length 1075 [2018-09-14 16:37:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:37:27,594 INFO L480 AbstractCegarLoop]: Abstraction has 78398 states and 121958 transitions. [2018-09-14 16:37:27,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:37:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 78398 states and 121958 transitions. [2018-09-14 16:37:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2018-09-14 16:37:27,850 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:37:27,851 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 16:37:27,852 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:37:27,852 INFO L82 PathProgramCache]: Analyzing trace with hash 614874323, now seen corresponding path program 1 times [2018-09-14 16:37:27,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:37:27,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:37:27,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:37:27,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:37:27,854 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:37:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:37:28,324 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:37:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 36 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 16:37:29,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:37:29,473 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:37:29,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:37:29,481 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:37:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:37:30,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:37:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 16:37:30,824 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:37:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 36 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 16:37:31,826 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:37:31,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:37:31,827 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:37:31,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:37:31,828 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:37:31,828 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:37:31,829 INFO L87 Difference]: Start difference. First operand 78398 states and 121958 transitions. Second operand 5 states. [2018-09-14 16:37:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:37:41,597 INFO L93 Difference]: Finished difference Result 196860 states and 322730 transitions. [2018-09-14 16:37:41,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:37:41,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1077 [2018-09-14 16:37:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:37:42,148 INFO L225 Difference]: With dead ends: 196860 [2018-09-14 16:37:42,149 INFO L226 Difference]: Without dead ends: 118468 [2018-09-14 16:37:42,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2163 GetRequests, 2148 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:37:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118468 states. [2018-09-14 16:37:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118468 to 118096. [2018-09-14 16:37:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118096 states. [2018-09-14 16:37:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118096 states to 118096 states and 184945 transitions. [2018-09-14 16:37:44,852 INFO L78 Accepts]: Start accepts. Automaton has 118096 states and 184945 transitions. Word has length 1077 [2018-09-14 16:37:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:37:44,852 INFO L480 AbstractCegarLoop]: Abstraction has 118096 states and 184945 transitions. [2018-09-14 16:37:44,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:37:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 118096 states and 184945 transitions. [2018-09-14 16:37:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2018-09-14 16:37:45,256 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:37:45,257 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 16:37:45,258 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:37:45,258 INFO L82 PathProgramCache]: Analyzing trace with hash -996079531, now seen corresponding path program 1 times [2018-09-14 16:37:45,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:37:45,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:37:45,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:37:45,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:37:45,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:37:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:37:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 134 proven. 28 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 16:37:47,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:37:47,158 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:37:47,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:37:47,168 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:37:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:37:47,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:37:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 16:37:48,714 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:37:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 134 proven. 28 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 16:37:49,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:37:49,420 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:37:49,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:37:49,440 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:37:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:37:50,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:37:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 16:37:51,653 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:37:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 134 proven. 28 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 16:37:52,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:37:52,564 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:37:52,564 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:37:52,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:37:52,566 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:37:52,566 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:37:52,567 INFO L87 Difference]: Start difference. First operand 118096 states and 184945 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 16:38:48,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-14 16:38:48,329 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:38:48,334 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:38:48,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:38:48 BoogieIcfgContainer [2018-09-14 16:38:48,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:38:48,336 INFO L168 Benchmark]: Toolchain (without parser) took 215652.53 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 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 3.3 GB. Max. memory is 7.1 GB. [2018-09-14 16:38:48,337 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:38:48,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3693.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.1 MB in the end (delta: 413.6 MB). Peak memory consumption was 413.6 MB. Max. memory is 7.1 GB. [2018-09-14 16:38:48,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 375.35 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 213.9 MB). Free memory was 976.1 MB in the beginning and 1.6 GB in the end (delta: -645.4 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2018-09-14 16:38:48,339 INFO L168 Benchmark]: Boogie Preprocessor took 1067.01 ms. Allocated memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: 497.5 MB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -452.7 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. [2018-09-14 16:38:48,340 INFO L168 Benchmark]: RCFGBuilder took 12254.52 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 382.2 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -103.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 16:38:48,341 INFO L168 Benchmark]: TraceAbstraction took 198253.55 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-14 16:38:48,347 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3693.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.1 MB in the end (delta: 413.6 MB). Peak memory consumption was 413.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 375.35 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 213.9 MB). Free memory was 976.1 MB in the beginning and 1.6 GB in the end (delta: -645.4 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1067.01 ms. Allocated memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: 497.5 MB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -452.7 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12254.52 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 382.2 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -103.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 198253.55 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9411]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9411). Cancelled while BasicCegarLoop was constructing difference of abstraction (118096states) and FLOYD_HOARE automaton (currently 56 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (496781 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1316 locations, 1 error locations. TIMEOUT Result, 198.1s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 146.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7606 SDtfs, 34331 SDslu, 8593 SDs, 0 SdLazy, 86533 SolverSat, 19117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21492 GetRequests, 21314 SyntacticMatches, 20 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118096occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 2446 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 7.6s SatisfiabilityAnalysisTime, 26.6s InterpolantComputationTime, 19033 NumberOfCodeBlocks, 19033 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 29645 ConstructedInterpolants, 0 QuantifiedInterpolants, 43710677 SizeOfPredicates, 14 NumberOfNonLiveVariables, 25680 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 3113/3373 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/Problem06_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-38-48-361.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem06_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-38-48-361.csv Completed graceful shutdown