java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:20:13,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:20:13,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:20:13,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:20:13,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:20:13,223 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:20:13,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:20:13,226 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:20:13,228 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:20:13,229 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:20:13,230 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:20:13,230 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:20:13,231 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:20:13,233 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:20:13,235 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:20:13,235 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:20:13,236 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:20:13,238 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:20:13,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:20:13,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:20:13,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:20:13,244 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:20:13,247 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:20:13,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:20:13,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:20:13,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:20:13,249 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:20:13,250 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:20:13,251 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:20:13,252 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:20:13,252 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:20:13,253 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:20:13,255 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:20:13,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:20:13,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:20:13,273 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:20:13,273 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:20:13,273 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:20:13,273 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:20:13,274 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:20:13,274 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:20:13,274 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:20:13,274 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:20:13,274 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:20:13,275 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:20:13,275 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:20:13,275 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:20:13,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:20:13,276 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:20:13,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:20:13,277 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:20:13,277 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:20:13,277 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:20:13,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:20:13,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:20:13,278 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:20:13,278 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:20:13,278 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:20:13,279 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:20:13,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:20:13,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:20:13,280 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:20:13,280 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:20:13,280 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:20:13,280 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:20:13,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:20:13,280 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:20:13,281 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:20:13,281 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:20:13,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:20:13,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:20:13,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:20:13,362 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:20:13,363 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:20:13,363 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-10-25 00:20:13,425 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/20fc9fb6e/46ae87909b1a444cbc9b6dd936f9e3bb/FLAGf32a79846 [2018-10-25 00:20:14,128 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:20:14,129 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-10-25 00:20:14,149 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/20fc9fb6e/46ae87909b1a444cbc9b6dd936f9e3bb/FLAGf32a79846 [2018-10-25 00:20:14,172 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/20fc9fb6e/46ae87909b1a444cbc9b6dd936f9e3bb [2018-10-25 00:20:14,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:20:14,185 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:20:14,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:20:14,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:20:14,193 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:20:14,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:20:14" (1/1) ... [2018-10-25 00:20:14,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31eb09b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:14, skipping insertion in model container [2018-10-25 00:20:14,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:20:14" (1/1) ... [2018-10-25 00:20:14,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:20:14,314 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:20:15,067 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:20:15,073 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:20:15,352 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:20:15,377 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:20:15,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15 WrapperNode [2018-10-25 00:20:15,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:20:15,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:20:15,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:20:15,380 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:20:15,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:20:15,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:20:15,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:20:15,707 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:20:15,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... [2018-10-25 00:20:15,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:20:15,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:20:15,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:20:15,846 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:20:15,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:20:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:20:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:20:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:20:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:20:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:20:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:20:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:20:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:20:21,258 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:20:21,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:20:21 BoogieIcfgContainer [2018-10-25 00:20:21,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:20:21,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:20:21,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:20:21,264 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:20:21,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:20:14" (1/3) ... [2018-10-25 00:20:21,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d24426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:20:21, skipping insertion in model container [2018-10-25 00:20:21,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:20:15" (2/3) ... [2018-10-25 00:20:21,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d24426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:20:21, skipping insertion in model container [2018-10-25 00:20:21,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:20:21" (3/3) ... [2018-10-25 00:20:21,269 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55_true-unreach-call.c [2018-10-25 00:20:21,279 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:20:21,288 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:20:21,306 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:20:21,347 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:20:21,347 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:20:21,347 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:20:21,348 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:20:21,348 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:20:21,348 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:20:21,348 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:20:21,348 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:20:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:20:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-25 00:20:21,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:21,397 INFO L375 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] [2018-10-25 00:20:21,400 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:21,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:21,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1276853404, now seen corresponding path program 1 times [2018-10-25 00:20:21,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:21,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:21,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:21,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:21,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:22,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:20:22,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:20:22,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:22,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:20:22,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:20:22,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:20:22,434 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:20:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:24,729 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-25 00:20:24,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:20:24,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-10-25 00:20:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:24,756 INFO L225 Difference]: With dead ends: 844 [2018-10-25 00:20:24,756 INFO L226 Difference]: Without dead ends: 530 [2018-10-25 00:20:24,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:20:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-25 00:20:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-25 00:20:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-25 00:20:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-25 00:20:24,913 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 169 [2018-10-25 00:20:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:24,915 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-25 00:20:24,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:20:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-25 00:20:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-25 00:20:24,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:24,934 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:24,934 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:24,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:24,938 INFO L82 PathProgramCache]: Analyzing trace with hash 15466080, now seen corresponding path program 1 times [2018-10-25 00:20:24,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:24,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:24,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:24,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:24,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:25,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:20:25,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:20:25,580 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:25,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:20:25,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:20:25,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:20:25,588 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-10-25 00:20:27,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:27,607 INFO L93 Difference]: Finished difference Result 1473 states and 2496 transitions. [2018-10-25 00:20:27,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:20:27,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-25 00:20:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:27,622 INFO L225 Difference]: With dead ends: 1473 [2018-10-25 00:20:27,622 INFO L226 Difference]: Without dead ends: 954 [2018-10-25 00:20:27,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:20:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-25 00:20:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 952. [2018-10-25 00:20:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-25 00:20:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1496 transitions. [2018-10-25 00:20:27,675 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1496 transitions. Word has length 182 [2018-10-25 00:20:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:27,676 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1496 transitions. [2018-10-25 00:20:27,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:20:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1496 transitions. [2018-10-25 00:20:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-25 00:20:27,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:27,681 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:27,681 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:27,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1708917764, now seen corresponding path program 1 times [2018-10-25 00:20:27,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:27,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:27,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:27,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:27,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:28,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:20:28,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 00:20:28,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:28,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:20:28,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:20:28,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:20:28,244 INFO L87 Difference]: Start difference. First operand 952 states and 1496 transitions. Second operand 5 states. [2018-10-25 00:20:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:33,062 INFO L93 Difference]: Finished difference Result 4008 states and 6512 transitions. [2018-10-25 00:20:33,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-25 00:20:33,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-10-25 00:20:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:33,100 INFO L225 Difference]: With dead ends: 4008 [2018-10-25 00:20:33,100 INFO L226 Difference]: Without dead ends: 3062 [2018-10-25 00:20:33,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:20:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2018-10-25 00:20:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3052. [2018-10-25 00:20:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-10-25 00:20:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 4689 transitions. [2018-10-25 00:20:33,257 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 4689 transitions. Word has length 184 [2018-10-25 00:20:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:33,257 INFO L481 AbstractCegarLoop]: Abstraction has 3052 states and 4689 transitions. [2018-10-25 00:20:33,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:20:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 4689 transitions. [2018-10-25 00:20:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-25 00:20:33,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:33,273 INFO L375 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] [2018-10-25 00:20:33,273 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:33,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1523085736, now seen corresponding path program 1 times [2018-10-25 00:20:33,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:33,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:33,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:33,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:33,563 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:20:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:33,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:20:33,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 00:20:33,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:33,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 00:20:33,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 00:20:33,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:20:33,913 INFO L87 Difference]: Start difference. First operand 3052 states and 4689 transitions. Second operand 7 states. [2018-10-25 00:20:34,179 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-25 00:20:37,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:37,791 INFO L93 Difference]: Finished difference Result 9246 states and 16253 transitions. [2018-10-25 00:20:37,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 00:20:37,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-10-25 00:20:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:37,862 INFO L225 Difference]: With dead ends: 9246 [2018-10-25 00:20:37,862 INFO L226 Difference]: Without dead ends: 6200 [2018-10-25 00:20:37,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-25 00:20:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2018-10-25 00:20:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 5920. [2018-10-25 00:20:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5920 states. [2018-10-25 00:20:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 9451 transitions. [2018-10-25 00:20:38,203 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 9451 transitions. Word has length 186 [2018-10-25 00:20:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:38,203 INFO L481 AbstractCegarLoop]: Abstraction has 5920 states and 9451 transitions. [2018-10-25 00:20:38,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 00:20:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 9451 transitions. [2018-10-25 00:20:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-25 00:20:38,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:38,223 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:38,223 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:38,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1271032685, now seen corresponding path program 1 times [2018-10-25 00:20:38,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:38,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:38,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:38,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:38,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:38,454 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:20:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:38,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:20:38,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:20:38,932 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:38,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:20:38,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:20:38,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:20:38,934 INFO L87 Difference]: Start difference. First operand 5920 states and 9451 transitions. Second operand 6 states. [2018-10-25 00:20:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:42,442 INFO L93 Difference]: Finished difference Result 18028 states and 31530 transitions. [2018-10-25 00:20:42,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:20:42,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-25 00:20:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:42,548 INFO L225 Difference]: With dead ends: 18028 [2018-10-25 00:20:42,548 INFO L226 Difference]: Without dead ends: 12114 [2018-10-25 00:20:42,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:20:42,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12114 states. [2018-10-25 00:20:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12114 to 11840. [2018-10-25 00:20:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11840 states. [2018-10-25 00:20:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11840 states to 11840 states and 19227 transitions. [2018-10-25 00:20:43,175 INFO L78 Accepts]: Start accepts. Automaton has 11840 states and 19227 transitions. Word has length 187 [2018-10-25 00:20:43,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:43,175 INFO L481 AbstractCegarLoop]: Abstraction has 11840 states and 19227 transitions. [2018-10-25 00:20:43,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:20:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11840 states and 19227 transitions. [2018-10-25 00:20:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-25 00:20:43,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:43,214 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:43,214 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:43,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1769410092, now seen corresponding path program 1 times [2018-10-25 00:20:43,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:43,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:43,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:43,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:43,596 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-25 00:20:43,964 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 00:20:44,236 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-25 00:20:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:44,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:44,319 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:44,319 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-25 00:20:44,322 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:44,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:44,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:45,491 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:20:45,493 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:20:45,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:45,541 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:20:46,503 INFO L232 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 71.62% of their original sizes. [2018-10-25 00:20:46,503 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:20:46,927 INFO L413 sIntCurrentIteration]: We have 198 unified AI predicates [2018-10-25 00:20:46,927 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:20:46,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:20:46,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2018-10-25 00:20:46,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:46,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:20:46,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:20:46,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:20:46,932 INFO L87 Difference]: Start difference. First operand 11840 states and 19227 transitions. Second operand 13 states. [2018-10-25 00:21:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:20,127 INFO L93 Difference]: Finished difference Result 23884 states and 38808 transitions. [2018-10-25 00:21:20,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:21:20,128 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 199 [2018-10-25 00:21:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:20,174 INFO L225 Difference]: With dead ends: 23884 [2018-10-25 00:21:20,174 INFO L226 Difference]: Without dead ends: 12050 [2018-10-25 00:21:20,209 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 199 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:21:20,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12050 states. [2018-10-25 00:21:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12050 to 12048. [2018-10-25 00:21:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12048 states. [2018-10-25 00:21:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12048 states to 12048 states and 19444 transitions. [2018-10-25 00:21:20,609 INFO L78 Accepts]: Start accepts. Automaton has 12048 states and 19444 transitions. Word has length 199 [2018-10-25 00:21:20,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:20,609 INFO L481 AbstractCegarLoop]: Abstraction has 12048 states and 19444 transitions. [2018-10-25 00:21:20,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:21:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12048 states and 19444 transitions. [2018-10-25 00:21:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-25 00:21:20,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:20,645 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:20,645 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:20,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:20,646 INFO L82 PathProgramCache]: Analyzing trace with hash 515488759, now seen corresponding path program 1 times [2018-10-25 00:21:20,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:20,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:20,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:20,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:20,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:21,176 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:21:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:21,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:21,341 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:21,341 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-25 00:21:21,342 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:21,354 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:21,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:23,791 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:23,791 INFO L272 AbstractInterpreter]: Visited 174 different actions 340 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:21:23,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:23,802 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:23,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:23,802 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:21:23,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:23,811 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:24,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:21:24,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:21:24,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:21:24,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-10-25 00:21:24,717 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:21:24,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:21:24,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:21:24,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:21:24,718 INFO L87 Difference]: Start difference. First operand 12048 states and 19444 transitions. Second operand 8 states. [2018-10-25 00:21:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:35,975 INFO L93 Difference]: Finished difference Result 41321 states and 80839 transitions. [2018-10-25 00:21:35,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-25 00:21:35,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2018-10-25 00:21:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:36,169 INFO L225 Difference]: With dead ends: 41321 [2018-10-25 00:21:36,169 INFO L226 Difference]: Without dead ends: 29487 [2018-10-25 00:21:36,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 430 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2018-10-25 00:21:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29487 states. [2018-10-25 00:21:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29487 to 28552. [2018-10-25 00:21:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28552 states. [2018-10-25 00:21:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28552 states to 28552 states and 42359 transitions. [2018-10-25 00:21:37,656 INFO L78 Accepts]: Start accepts. Automaton has 28552 states and 42359 transitions. Word has length 208 [2018-10-25 00:21:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:37,656 INFO L481 AbstractCegarLoop]: Abstraction has 28552 states and 42359 transitions. [2018-10-25 00:21:37,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 00:21:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 28552 states and 42359 transitions. [2018-10-25 00:21:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-25 00:21:37,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:37,716 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:37,716 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:37,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:37,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1272963469, now seen corresponding path program 1 times [2018-10-25 00:21:37,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:37,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:37,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:37,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:37,718 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:38,004 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:21:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 49 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-25 00:21:38,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:38,430 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:38,430 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-25 00:21:38,430 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:38,438 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:38,438 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:39,692 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:21:39,692 INFO L272 AbstractInterpreter]: Visited 174 different actions 342 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:21:39,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:39,724 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:21:41,420 INFO L232 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 71.5% of their original sizes. [2018-10-25 00:21:41,421 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:21:41,768 INFO L413 sIntCurrentIteration]: We have 222 unified AI predicates [2018-10-25 00:21:41,768 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:21:41,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:21:41,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-25 00:21:41,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:41,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-25 00:21:41,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-25 00:21:41,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-10-25 00:21:41,770 INFO L87 Difference]: Start difference. First operand 28552 states and 42359 transitions. Second operand 19 states. [2018-10-25 00:22:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:22:15,498 INFO L93 Difference]: Finished difference Result 54526 states and 81181 transitions. [2018-10-25 00:22:15,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:22:15,498 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 223 [2018-10-25 00:22:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:22:15,570 INFO L225 Difference]: With dead ends: 54526 [2018-10-25 00:22:15,570 INFO L226 Difference]: Without dead ends: 26188 [2018-10-25 00:22:15,613 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2018-10-25 00:22:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2018-10-25 00:22:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 26177. [2018-10-25 00:22:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26177 states. [2018-10-25 00:22:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26177 states to 26177 states and 38844 transitions. [2018-10-25 00:22:16,209 INFO L78 Accepts]: Start accepts. Automaton has 26177 states and 38844 transitions. Word has length 223 [2018-10-25 00:22:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:22:16,210 INFO L481 AbstractCegarLoop]: Abstraction has 26177 states and 38844 transitions. [2018-10-25 00:22:16,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-25 00:22:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 26177 states and 38844 transitions. [2018-10-25 00:22:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-25 00:22:16,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:22:16,242 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-25 00:22:16,243 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:22:16,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1496366192, now seen corresponding path program 1 times [2018-10-25 00:22:16,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:22:16,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:16,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:16,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:16,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:22:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 94 proven. 31 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-25 00:22:16,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:16,592 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:22:16,592 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-25 00:22:16,592 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [48], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:22:16,598 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:22:16,599 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:22:18,525 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:22:18,525 INFO L272 AbstractInterpreter]: Visited 176 different actions 344 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:22:18,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:18,530 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:22:18,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:18,530 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:22:18,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:18,538 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:22:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:18,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:22:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 141 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-25 00:22:18,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:22:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 143 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-25 00:22:19,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:22:19,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:22:19,041 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:22:19,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:22:19,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:22:19,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:22:19,043 INFO L87 Difference]: Start difference. First operand 26177 states and 38844 transitions. Second operand 9 states. [2018-10-25 00:22:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:22:21,628 INFO L93 Difference]: Finished difference Result 42858 states and 63387 transitions. [2018-10-25 00:22:21,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 00:22:21,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 251 [2018-10-25 00:22:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:22:21,687 INFO L225 Difference]: With dead ends: 42858 [2018-10-25 00:22:21,687 INFO L226 Difference]: Without dead ends: 17106 [2018-10-25 00:22:21,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 501 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:22:21,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17106 states. [2018-10-25 00:22:22,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17106 to 14574. [2018-10-25 00:22:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14574 states. [2018-10-25 00:22:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14574 states to 14574 states and 18426 transitions. [2018-10-25 00:22:22,562 INFO L78 Accepts]: Start accepts. Automaton has 14574 states and 18426 transitions. Word has length 251 [2018-10-25 00:22:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:22:22,563 INFO L481 AbstractCegarLoop]: Abstraction has 14574 states and 18426 transitions. [2018-10-25 00:22:22,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:22:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 14574 states and 18426 transitions. [2018-10-25 00:22:22,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-25 00:22:22,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:22:22,576 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:22:22,577 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:22:22,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:22,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1460650671, now seen corresponding path program 1 times [2018-10-25 00:22:22,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:22:22,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:22,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:22,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:22,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:22:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 101 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-25 00:22:22,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:22,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:22:22,894 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-25 00:22:22,894 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:22:22,898 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:22:22,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:22:24,851 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:22:24,851 INFO L272 AbstractInterpreter]: Visited 175 different actions 342 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:22:24,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:24,862 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:22:24,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:24,862 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:22:24,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:24,872 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:22:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:25,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:22:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:22:25,608 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:22:25,774 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-10-25 00:22:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 89 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:22:26,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:22:26,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2018-10-25 00:22:26,276 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:22:26,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:22:26,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:22:26,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:22:26,277 INFO L87 Difference]: Start difference. First operand 14574 states and 18426 transitions. Second operand 12 states. [2018-10-25 00:22:35,689 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-25 00:22:38,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:22:39,000 INFO L93 Difference]: Finished difference Result 56529 states and 84108 transitions. [2018-10-25 00:22:39,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-25 00:22:39,000 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 254 [2018-10-25 00:22:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:22:39,214 INFO L225 Difference]: With dead ends: 56529 [2018-10-25 00:22:39,214 INFO L226 Difference]: Without dead ends: 42380 [2018-10-25 00:22:39,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 569 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3023 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1361, Invalid=7011, Unknown=0, NotChecked=0, Total=8372 [2018-10-25 00:22:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42380 states. [2018-10-25 00:22:40,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42380 to 38550. [2018-10-25 00:22:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38550 states. [2018-10-25 00:22:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38550 states to 38550 states and 48641 transitions. [2018-10-25 00:22:40,338 INFO L78 Accepts]: Start accepts. Automaton has 38550 states and 48641 transitions. Word has length 254 [2018-10-25 00:22:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:22:40,338 INFO L481 AbstractCegarLoop]: Abstraction has 38550 states and 48641 transitions. [2018-10-25 00:22:40,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:22:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 38550 states and 48641 transitions. [2018-10-25 00:22:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-25 00:22:40,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:22:40,354 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:22:40,354 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:22:40,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash 753374301, now seen corresponding path program 1 times [2018-10-25 00:22:40,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:22:40,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:40,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:22:40,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:22:40,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:22:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:22:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:22:40,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:22:40,989 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:22:40,989 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-25 00:22:40,989 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:22:40,995 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:22:40,995 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:22:42,520 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:22:42,521 INFO L272 AbstractInterpreter]: Visited 173 different actions 340 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:22:42,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:22:42,522 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:22:45,529 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 84.88% of their original sizes. [2018-10-25 00:22:45,529 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:22:56,771 INFO L413 sIntCurrentIteration]: We have 306 unified AI predicates [2018-10-25 00:22:56,771 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:22:56,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:22:56,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:22:56,772 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:22:56,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:22:56,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:22:56,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:22:56,773 INFO L87 Difference]: Start difference. First operand 38550 states and 48641 transitions. Second operand 13 states. [2018-10-25 00:23:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:23:43,317 INFO L93 Difference]: Finished difference Result 86526 states and 110931 transitions. [2018-10-25 00:23:43,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 00:23:43,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 307 [2018-10-25 00:23:43,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:23:43,425 INFO L225 Difference]: With dead ends: 86526 [2018-10-25 00:23:43,425 INFO L226 Difference]: Without dead ends: 48401 [2018-10-25 00:23:43,471 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 311 GetRequests, 93 SyntacticMatches, 202 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:23:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48401 states. [2018-10-25 00:23:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48401 to 48360. [2018-10-25 00:23:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48360 states. [2018-10-25 00:23:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48360 states to 48360 states and 60017 transitions. [2018-10-25 00:23:44,505 INFO L78 Accepts]: Start accepts. Automaton has 48360 states and 60017 transitions. Word has length 307 [2018-10-25 00:23:44,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:23:44,506 INFO L481 AbstractCegarLoop]: Abstraction has 48360 states and 60017 transitions. [2018-10-25 00:23:44,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:23:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 48360 states and 60017 transitions. [2018-10-25 00:23:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-25 00:23:44,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:23:44,535 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:23:44,535 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:23:44,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:23:44,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1369611910, now seen corresponding path program 1 times [2018-10-25 00:23:44,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:23:44,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:23:44,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:23:44,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:23:44,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:23:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:23:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 147 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:23:45,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:23:45,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:23:45,727 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-10-25 00:23:45,729 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:23:45,734 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:23:45,734 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:23:53,173 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:23:53,173 INFO L272 AbstractInterpreter]: Visited 175 different actions 701 times. Merged at 8 different actions 37 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:23:53,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:23:53,182 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:23:53,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:23:53,182 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:23:53,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:23:53,191 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:23:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:23:53,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:23:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-25 00:23:53,771 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:23:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 156 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-25 00:23:54,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:23:54,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-25 00:23:54,173 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:23:54,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:23:54,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:23:54,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:23:54,174 INFO L87 Difference]: Start difference. First operand 48360 states and 60017 transitions. Second operand 12 states. Received shutdown request... [2018-10-25 00:23:59,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-25 00:23:59,269 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:23:59,275 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:23:59,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:23:59 BoogieIcfgContainer [2018-10-25 00:23:59,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:23:59,276 INFO L168 Benchmark]: Toolchain (without parser) took 225091.84 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 158.6 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-25 00:23:59,277 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. [2018-10-25 00:23:59,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1192.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:23:59,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 327.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -879.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:23:59,279 INFO L168 Benchmark]: Boogie Preprocessor took 137.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:23:59,280 INFO L168 Benchmark]: RCFGBuilder took 5414.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.3 MB). Peak memory consumption was 260.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:23:59,281 INFO L168 Benchmark]: TraceAbstraction took 218014.54 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 679.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-25 00:23:59,286 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 1192.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 327.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -879.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5414.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.3 MB). Peak memory consumption was 260.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218014.54 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 679.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1521]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1521). Cancelled while BasicCegarLoop was constructing difference of abstraction (48360states) and FLOYD_HOARE automaton (currently 33 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (8402 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 217.9s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 163.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3011 SDtfs, 21235 SDslu, 3387 SDs, 0 SdLazy, 31227 SolverSat, 5883 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3126 GetRequests, 2654 SyntacticMatches, 217 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4767 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48360occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.8s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9990347728909984 AbsIntWeakeningRatio, 0.2727272727272727 AbsIntAvgWeakeningVarsNumRemoved, 16.403581267217632 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 7922 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 3701 NumberOfCodeBlocks, 3701 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4713 ConstructedInterpolants, 0 QuantifiedInterpolants, 2841460 SizeOfPredicates, 10 NumberOfNonLiveVariables, 4945 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 1810/2024 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown