java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:30:05,261 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:30:05,263 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:30:05,275 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:30:05,275 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:30:05,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:30:05,278 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:30:05,279 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:30:05,281 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:30:05,282 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:30:05,283 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:30:05,283 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:30:05,284 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:30:05,285 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:30:05,286 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:30:05,287 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:30:05,288 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:30:05,290 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:30:05,292 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:30:05,293 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:30:05,294 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:30:05,296 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:30:05,298 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:30:05,298 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:30:05,299 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:30:05,300 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:30:05,301 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:30:05,302 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:30:05,303 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:30:05,305 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:30:05,305 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:30:05,306 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:30:05,306 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:30:05,307 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:30:05,311 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:30:05,312 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:30:05,312 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:30:05,345 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:30:05,346 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:30:05,347 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:30:05,347 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:30:05,347 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:30:05,347 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:30:05,347 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:30:05,348 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:30:05,348 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:30:05,348 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:30:05,348 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:30:05,352 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:30:05,353 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:30:05,353 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:30:05,353 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:30:05,353 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:30:05,353 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:30:05,354 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:30:05,354 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:30:05,354 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:30:05,354 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:30:05,355 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:30:05,356 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:30:05,356 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:30:05,356 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:30:05,356 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:30:05,356 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:30:05,357 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:30:05,357 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:30:05,357 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:30:05,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:30:05,358 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:30:05,358 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:30:05,358 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:30:05,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:30:05,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:30:05,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:30:05,446 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:30:05,447 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:30:05,447 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label16_true-unreach-call.c [2018-09-18 10:30:05,798 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d352843eb/c8414a9126ca4ad7bd993c0b6b02cf03/FLAGad2fd2d70 [2018-09-18 10:30:06,440 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:30:06,441 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label16_true-unreach-call.c [2018-09-18 10:30:06,485 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d352843eb/c8414a9126ca4ad7bd993c0b6b02cf03/FLAGad2fd2d70 [2018-09-18 10:30:06,501 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d352843eb/c8414a9126ca4ad7bd993c0b6b02cf03 [2018-09-18 10:30:06,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:30:06,518 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:30:06,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:30:06,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:30:06,529 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:30:06,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:30:06" (1/1) ... [2018-09-18 10:30:06,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2872e34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:06, skipping insertion in model container [2018-09-18 10:30:06,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:30:06" (1/1) ... [2018-09-18 10:30:06,547 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:30:08,893 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:30:08,912 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:30:10,150 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:30:10,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10 WrapperNode [2018-09-18 10:30:10,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:30:10,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:30:10,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:30:10,612 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:30:10,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:10,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:10,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:30:10,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:30:10,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:30:10,798 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:30:11,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:11,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:11,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:11,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:11,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:11,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:11,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... [2018-09-18 10:30:11,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:30:11,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:30:11,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:30:11,888 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:30:11,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:30:11,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:30:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2018-09-18 10:30:11,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2018-09-18 10:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:30:11,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2018-09-18 10:30:11,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2018-09-18 10:30:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-18 10:30:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-18 10:30:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-18 10:30:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-18 10:30:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:30:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:30:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:30:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:30:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:30:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:30:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:30:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:30:27,018 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:30:27,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:30:27 BoogieIcfgContainer [2018-09-18 10:30:27,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:30:27,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:30:27,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:30:27,023 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:30:27,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:30:06" (1/3) ... [2018-09-18 10:30:27,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e48ed5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:30:27, skipping insertion in model container [2018-09-18 10:30:27,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:30:10" (2/3) ... [2018-09-18 10:30:27,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e48ed5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:30:27, skipping insertion in model container [2018-09-18 10:30:27,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:30:27" (3/3) ... [2018-09-18 10:30:27,027 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label16_true-unreach-call.c [2018-09-18 10:30:27,037 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:30:27,048 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:30:27,120 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:30:27,121 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:30:27,121 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:30:27,122 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:30:27,122 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:30:27,122 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:30:27,122 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:30:27,122 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:30:27,122 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:30:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states. [2018-09-18 10:30:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2018-09-18 10:30:27,289 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:30:27,294 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:30:27,296 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:30:27,302 INFO L82 PathProgramCache]: Analyzing trace with hash 605480258, now seen corresponding path program 1 times [2018-09-18 10:30:27,305 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:30:27,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:30:27,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:30:27,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:30:27,362 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:30:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:30:30,039 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:30:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:30:33,486 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:30:33,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:30:33,487 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:30:33,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:30:33,515 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:30:33,515 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:30:33,518 INFO L87 Difference]: Start difference. First operand 2223 states. Second operand 3 states. [2018-09-18 10:30:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:30:46,262 INFO L93 Difference]: Finished difference Result 6258 states and 11790 transitions. [2018-09-18 10:30:46,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:30:46,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1709 [2018-09-18 10:30:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:30:46,334 INFO L225 Difference]: With dead ends: 6258 [2018-09-18 10:30:46,335 INFO L226 Difference]: Without dead ends: 4033 [2018-09-18 10:30:46,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 9 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:30:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2018-09-18 10:30:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 4021. [2018-09-18 10:30:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4021 states. [2018-09-18 10:30:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 7331 transitions. [2018-09-18 10:30:46,576 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 7331 transitions. Word has length 1709 [2018-09-18 10:30:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:30:46,583 INFO L480 AbstractCegarLoop]: Abstraction has 4021 states and 7331 transitions. [2018-09-18 10:30:46,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:30:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 7331 transitions. [2018-09-18 10:30:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1726 [2018-09-18 10:30:46,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:30:46,706 INFO L376 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:30:46,706 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:30:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1220535830, now seen corresponding path program 1 times [2018-09-18 10:30:46,708 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:30:46,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:30:46,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:30:46,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:30:46,711 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:30:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:30:47,381 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:30:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:30:48,425 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:30:48,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 10:30:48,425 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:30:48,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:30:48,430 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:30:48,430 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 10:30:48,430 INFO L87 Difference]: Start difference. First operand 4021 states and 7331 transitions. Second operand 5 states. [2018-09-18 10:31:03,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:31:03,665 INFO L93 Difference]: Finished difference Result 10043 states and 18229 transitions. [2018-09-18 10:31:03,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:31:03,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1725 [2018-09-18 10:31:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:31:03,700 INFO L225 Difference]: With dead ends: 10043 [2018-09-18 10:31:03,701 INFO L226 Difference]: Without dead ends: 6028 [2018-09-18 10:31:03,713 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:31:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2018-09-18 10:31:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 5947. [2018-09-18 10:31:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5947 states. [2018-09-18 10:31:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5947 states to 5947 states and 10220 transitions. [2018-09-18 10:31:03,898 INFO L78 Accepts]: Start accepts. Automaton has 5947 states and 10220 transitions. Word has length 1725 [2018-09-18 10:31:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:31:03,898 INFO L480 AbstractCegarLoop]: Abstraction has 5947 states and 10220 transitions. [2018-09-18 10:31:03,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:31:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5947 states and 10220 transitions. [2018-09-18 10:31:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1729 [2018-09-18 10:31:03,950 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:31:03,951 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:31:03,952 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:31:03,953 INFO L82 PathProgramCache]: Analyzing trace with hash -696699785, now seen corresponding path program 1 times [2018-09-18 10:31:03,953 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:31:03,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:31:03,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:31:03,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:31:03,956 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:31:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:31:04,428 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:31:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:31:06,023 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:31:06,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:31:06,023 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:31:06,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:31:06,026 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:31:06,026 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:31:06,027 INFO L87 Difference]: Start difference. First operand 5947 states and 10220 transitions. Second operand 6 states. [2018-09-18 10:31:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:31:20,044 INFO L93 Difference]: Finished difference Result 13907 states and 23858 transitions. [2018-09-18 10:31:20,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:31:20,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1728 [2018-09-18 10:31:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:31:20,086 INFO L225 Difference]: With dead ends: 13907 [2018-09-18 10:31:20,086 INFO L226 Difference]: Without dead ends: 7966 [2018-09-18 10:31:20,102 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:31:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7966 states. [2018-09-18 10:31:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7966 to 7878. [2018-09-18 10:31:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7878 states. [2018-09-18 10:31:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 12611 transitions. [2018-09-18 10:31:20,286 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 12611 transitions. Word has length 1728 [2018-09-18 10:31:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:31:20,287 INFO L480 AbstractCegarLoop]: Abstraction has 7878 states and 12611 transitions. [2018-09-18 10:31:20,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:31:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 12611 transitions. [2018-09-18 10:31:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2018-09-18 10:31:20,336 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:31:20,337 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:31:20,338 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:31:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash 821597584, now seen corresponding path program 1 times [2018-09-18 10:31:20,339 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:31:20,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:31:20,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:31:20,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:31:20,340 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:31:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:31:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:31:21,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:31:21,999 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:31:22,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:31:22,008 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:31:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:31:22,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:31:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:31:24,100 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:31:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:31:25,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:31:25,650 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:31:25,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:31:25,668 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:31:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:31:26,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:31:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:31:28,319 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:31:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:31:29,543 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:31:29,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:31:29,545 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:31:29,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:31:29,549 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:31:29,550 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:31:29,550 INFO L87 Difference]: Start difference. First operand 7878 states and 12611 transitions. Second operand 9 states. [2018-09-18 10:32:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:32:01,405 INFO L93 Difference]: Finished difference Result 40033 states and 69554 transitions. [2018-09-18 10:32:01,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-18 10:32:01,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1748 [2018-09-18 10:32:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:32:01,611 INFO L225 Difference]: With dead ends: 40033 [2018-09-18 10:32:01,612 INFO L226 Difference]: Without dead ends: 32161 [2018-09-18 10:32:01,668 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7039 GetRequests, 6996 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2018-09-18 10:32:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32161 states. [2018-09-18 10:32:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32161 to 31068. [2018-09-18 10:32:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31068 states. [2018-09-18 10:32:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31068 states to 31068 states and 44636 transitions. [2018-09-18 10:32:02,734 INFO L78 Accepts]: Start accepts. Automaton has 31068 states and 44636 transitions. Word has length 1748 [2018-09-18 10:32:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:32:02,735 INFO L480 AbstractCegarLoop]: Abstraction has 31068 states and 44636 transitions. [2018-09-18 10:32:02,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:32:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 31068 states and 44636 transitions. [2018-09-18 10:32:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1804 [2018-09-18 10:32:02,855 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:32:02,856 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:32:02,857 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:32:02,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2092508590, now seen corresponding path program 1 times [2018-09-18 10:32:02,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:32:02,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:32:02,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:32:02,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:32:02,860 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:32:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:32:03,367 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:32:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:32:05,734 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:32:05,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:32:05,736 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:32:05,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:32:05,738 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:32:05,738 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:32:05,739 INFO L87 Difference]: Start difference. First operand 31068 states and 44636 transitions. Second operand 6 states. [2018-09-18 10:32:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:32:18,888 INFO L93 Difference]: Finished difference Result 70828 states and 105044 transitions. [2018-09-18 10:32:18,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:32:18,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1803 [2018-09-18 10:32:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:32:19,056 INFO L225 Difference]: With dead ends: 70828 [2018-09-18 10:32:19,056 INFO L226 Difference]: Without dead ends: 39766 [2018-09-18 10:32:19,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:32:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39766 states. [2018-09-18 10:32:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39766 to 39513. [2018-09-18 10:32:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39513 states. [2018-09-18 10:32:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39513 states to 39513 states and 54391 transitions. [2018-09-18 10:32:19,928 INFO L78 Accepts]: Start accepts. Automaton has 39513 states and 54391 transitions. Word has length 1803 [2018-09-18 10:32:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:32:19,928 INFO L480 AbstractCegarLoop]: Abstraction has 39513 states and 54391 transitions. [2018-09-18 10:32:19,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:32:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 39513 states and 54391 transitions. [2018-09-18 10:32:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2018-09-18 10:32:20,049 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:32:20,050 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:32:20,051 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:32:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1027704965, now seen corresponding path program 1 times [2018-09-18 10:32:20,052 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:32:20,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:32:20,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:32:20,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:32:20,053 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:32:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:32:20,456 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:32:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 116 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:32:22,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:32:22,964 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) [2018-09-18 10:32:22,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:32:22,976 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:32:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:32:23,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:32:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-18 10:32:25,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:32:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 116 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:32:27,532 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:32:27,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 10:32:27,532 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:32:27,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:32:27,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:32:27,534 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:32:27,535 INFO L87 Difference]: Start difference. First operand 39513 states and 54391 transitions. Second operand 5 states. [2018-09-18 10:32:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:32:40,321 INFO L93 Difference]: Finished difference Result 99649 states and 142488 transitions. [2018-09-18 10:32:40,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:32:40,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1831 [2018-09-18 10:32:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:32:40,536 INFO L225 Difference]: With dead ends: 99649 [2018-09-18 10:32:40,537 INFO L226 Difference]: Without dead ends: 60142 [2018-09-18 10:32:40,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3671 GetRequests, 3657 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:32:40,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60142 states. [2018-09-18 10:32:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60142 to 59098. [2018-09-18 10:32:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59098 states. [2018-09-18 10:32:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59098 states to 59098 states and 74629 transitions. [2018-09-18 10:32:41,665 INFO L78 Accepts]: Start accepts. Automaton has 59098 states and 74629 transitions. Word has length 1831 [2018-09-18 10:32:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:32:41,666 INFO L480 AbstractCegarLoop]: Abstraction has 59098 states and 74629 transitions. [2018-09-18 10:32:41,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:32:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 59098 states and 74629 transitions. [2018-09-18 10:32:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1907 [2018-09-18 10:32:41,847 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:32:41,848 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:32:41,849 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:32:41,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2079739682, now seen corresponding path program 1 times [2018-09-18 10:32:41,850 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:32:41,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:32:41,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:32:41,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:32:41,851 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:32:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:32:42,325 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:32:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 188 proven. 93 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 10:32:44,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:32:44,580 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:32:44,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:32:44,588 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:32:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:32:45,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:32:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-18 10:32:47,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:32:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 188 proven. 93 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 10:32:49,921 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:32:49,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:32:49,922 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:32:49,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:32:49,924 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:32:49,924 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:32:49,924 INFO L87 Difference]: Start difference. First operand 59098 states and 74629 transitions. Second operand 5 states. [2018-09-18 10:33:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:33:05,674 INFO L93 Difference]: Finished difference Result 147381 states and 197935 transitions. [2018-09-18 10:33:05,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:33:05,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1906 [2018-09-18 10:33:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:33:05,969 INFO L225 Difference]: With dead ends: 147381 [2018-09-18 10:33:05,969 INFO L226 Difference]: Without dead ends: 88289 [2018-09-18 10:33:06,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3821 GetRequests, 3806 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:33:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88289 states. [2018-09-18 10:33:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88289 to 87714. [2018-09-18 10:33:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87714 states. [2018-09-18 10:33:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87714 states to 87714 states and 111754 transitions. [2018-09-18 10:33:07,889 INFO L78 Accepts]: Start accepts. Automaton has 87714 states and 111754 transitions. Word has length 1906 [2018-09-18 10:33:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:33:07,890 INFO L480 AbstractCegarLoop]: Abstraction has 87714 states and 111754 transitions. [2018-09-18 10:33:07,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:33:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand 87714 states and 111754 transitions. [2018-09-18 10:33:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1915 [2018-09-18 10:33:08,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:33:08,098 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:33:08,099 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:33:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash 251931684, now seen corresponding path program 1 times [2018-09-18 10:33:08,100 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:33:08,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:33:08,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:33:08,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:33:08,107 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:33:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:33:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:33:11,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:33:11,074 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:33:11,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:33:11,082 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:33:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:33:11,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:33:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:33:13,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:33:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:33:15,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:33:15,503 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:33:15,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:33:15,520 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:33:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:33:16,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:33:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:33:18,230 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:33:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:33:19,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:33:19,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 10:33:19,445 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:33:19,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:33:19,448 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:33:19,448 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:33:19,448 INFO L87 Difference]: Start difference. First operand 87714 states and 111754 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 10:33:42,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-18 10:33:42,892 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:33:42,898 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:33:42,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:33:42 BoogieIcfgContainer [2018-09-18 10:33:42,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:33:42,900 INFO L168 Benchmark]: Toolchain (without parser) took 216384.90 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -493.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-18 10:33:42,901 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:33:42,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4091.87 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 207.1 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -226.5 MB). Peak memory consumption was 473.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:33:42,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.70 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:33:42,903 INFO L168 Benchmark]: Boogie Preprocessor took 1089.42 ms. Allocated memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: 664.3 MB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -648.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:33:42,904 INFO L168 Benchmark]: RCFGBuilder took 15131.62 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 308.3 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 234.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 10:33:42,906 INFO L168 Benchmark]: TraceAbstraction took 195878.99 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 124.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-18 10:33:42,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4091.87 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 207.1 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -226.5 MB). Peak memory consumption was 473.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.70 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1089.42 ms. Allocated memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: 664.3 MB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -648.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15131.62 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 308.3 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 234.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 195878.99 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 124.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 11108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 11108). Cancelled while BasicCegarLoop was constructing difference of abstraction (87714states) and FLOYD_HOARE automaton (currently 13 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (133189 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 2223 locations, 1 error locations. TIMEOUT Result, 195.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 140.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6266 SDtfs, 79837 SDslu, 7899 SDs, 0 SdLazy, 100627 SolverSat, 36557 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22246 GetRequests, 22119 SyntacticMatches, 25 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87714occurred 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: 5.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 3146 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.5s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 27.9s InterpolantComputationTime, 25425 NumberOfCodeBlocks, 25425 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 36466 ConstructedInterpolants, 0 QuantifiedInterpolants, 84051437 SizeOfPredicates, 4 NumberOfNonLiveVariables, 13807 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 2943/3195 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem05_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-33-42-927.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem05_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-33-42-927.csv Completed graceful shutdown