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_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:13:38,209 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:13:38,212 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:13:38,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:13:38,224 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:13:38,225 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:13:38,226 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:13:38,228 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:13:38,229 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:13:38,230 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:13:38,231 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:13:38,231 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:13:38,232 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:13:38,233 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:13:38,234 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:13:38,235 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:13:38,236 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:13:38,238 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:13:38,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:13:38,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:13:38,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:13:38,244 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:13:38,246 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:13:38,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:13:38,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:13:38,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:13:38,249 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:13:38,250 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:13:38,251 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:13:38,252 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:13:38,252 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:13:38,253 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:13:38,256 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 00:13:38,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:13:38,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:13:38,279 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:13:38,279 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:13:38,280 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:13:38,281 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:13:38,281 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:13:38,282 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:13:38,282 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:13:38,282 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:13:38,282 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:13:38,282 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:13:38,283 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:13:38,283 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:13:38,284 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:13:38,284 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:13:38,284 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:13:38,284 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:13:38,285 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:13:38,286 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:13:38,286 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:13:38,286 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:13:38,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:13:38,286 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:13:38,287 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:13:38,287 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:13:38,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:13:38,287 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:13:38,287 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:13:38,288 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:13:38,288 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:13:38,288 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:13:38,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:13:38,289 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:13:38,289 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:13:38,289 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:13:38,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:13:38,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:13:38,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:13:38,354 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:13:38,354 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:13:38,355 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23_true-unreach-call.c [2018-10-25 00:13:38,412 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05b35420b/cfcb9f80f4aa4b178b5326e42e49fb6f/FLAGeccd453dc [2018-10-25 00:13:39,109 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:13:39,110 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label23_true-unreach-call.c [2018-10-25 00:13:39,128 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05b35420b/cfcb9f80f4aa4b178b5326e42e49fb6f/FLAGeccd453dc [2018-10-25 00:13:39,145 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05b35420b/cfcb9f80f4aa4b178b5326e42e49fb6f [2018-10-25 00:13:39,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:13:39,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:13:39,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:39,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:13:39,167 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:13:39,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:39" (1/1) ... [2018-10-25 00:13:39,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206c1d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:39, skipping insertion in model container [2018-10-25 00:13:39,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:39" (1/1) ... [2018-10-25 00:13:39,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:13:39,279 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:13:39,989 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:39,995 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:13:40,315 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:40,337 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:13:40,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40 WrapperNode [2018-10-25 00:13:40,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:40,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:40,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:13:40,339 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:13:40,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:40,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:13:40,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:13:40,680 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:13:40,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (1/1) ... [2018-10-25 00:13:40,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:13:40,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:13:40,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:13:40,833 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:13:40,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (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 00:13:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:13:40,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:13:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:13:40,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:13:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:13:40,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:13:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:13:40,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:13:46,159 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:13:46,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:46 BoogieIcfgContainer [2018-10-25 00:13:46,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:13:46,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:13:46,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:13:46,165 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:13:46,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:13:39" (1/3) ... [2018-10-25 00:13:46,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a5b1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:46, skipping insertion in model container [2018-10-25 00:13:46,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:40" (2/3) ... [2018-10-25 00:13:46,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a5b1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:46, skipping insertion in model container [2018-10-25 00:13:46,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:46" (3/3) ... [2018-10-25 00:13:46,169 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label23_true-unreach-call.c [2018-10-25 00:13:46,180 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:13:46,189 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:13:46,207 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:13:46,248 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:13:46,248 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:13:46,248 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:13:46,248 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:13:46,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:13:46,249 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:13:46,249 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:13:46,249 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:13:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:13:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-25 00:13:46,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:46,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:46,302 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:46,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1250104911, now seen corresponding path program 1 times [2018-10-25 00:13:46,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:46,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:46,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:46,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:46,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:47,539 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 00:13:47,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:47,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:13:47,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:47,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:13:47,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:13:47,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:13:47,570 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:13:51,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:51,127 INFO L93 Difference]: Finished difference Result 1084 states and 1945 transitions. [2018-10-25 00:13:51,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:13:51,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-10-25 00:13:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:51,157 INFO L225 Difference]: With dead ends: 1084 [2018-10-25 00:13:51,158 INFO L226 Difference]: Without dead ends: 766 [2018-10-25 00:13:51,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:13:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2018-10-25 00:13:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 524. [2018-10-25 00:13:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-25 00:13:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 918 transitions. [2018-10-25 00:13:51,281 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 918 transitions. Word has length 178 [2018-10-25 00:13:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:51,283 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 918 transitions. [2018-10-25 00:13:51,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:13:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 918 transitions. [2018-10-25 00:13:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-25 00:13:51,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:51,296 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:51,297 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:51,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash -217139872, now seen corresponding path program 1 times [2018-10-25 00:13:51,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:51,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:51,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:51,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:51,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:51,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:51,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 00:13:51,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:51,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:13:51,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:13:51,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:13:51,661 INFO L87 Difference]: Start difference. First operand 524 states and 918 transitions. Second operand 5 states. [2018-10-25 00:13:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:54,903 INFO L93 Difference]: Finished difference Result 1614 states and 2930 transitions. [2018-10-25 00:13:54,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:13:54,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2018-10-25 00:13:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:54,921 INFO L225 Difference]: With dead ends: 1614 [2018-10-25 00:13:54,922 INFO L226 Difference]: Without dead ends: 1096 [2018-10-25 00:13:54,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:13:54,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-10-25 00:13:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-10-25 00:13:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-10-25 00:13:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1769 transitions. [2018-10-25 00:13:54,994 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1769 transitions. Word has length 189 [2018-10-25 00:13:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:54,994 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 1769 transitions. [2018-10-25 00:13:54,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:13:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1769 transitions. [2018-10-25 00:13:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-25 00:13:54,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:54,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:55,000 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:55,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:55,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1010977333, now seen corresponding path program 1 times [2018-10-25 00:13:55,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:55,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:55,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:55,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:55,002 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:55,400 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 00:13:55,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:55,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:55,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:55,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:55,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:55,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:55,405 INFO L87 Difference]: Start difference. First operand 1073 states and 1769 transitions. Second operand 3 states. [2018-10-25 00:13:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:57,923 INFO L93 Difference]: Finished difference Result 3100 states and 5252 transitions. [2018-10-25 00:13:57,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:57,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-10-25 00:13:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:57,949 INFO L225 Difference]: With dead ends: 3100 [2018-10-25 00:13:57,949 INFO L226 Difference]: Without dead ends: 2033 [2018-10-25 00:13:57,958 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 00:13:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2018-10-25 00:13:58,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2030. [2018-10-25 00:13:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2018-10-25 00:13:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3203 transitions. [2018-10-25 00:13:58,044 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3203 transitions. Word has length 191 [2018-10-25 00:13:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:58,045 INFO L481 AbstractCegarLoop]: Abstraction has 2030 states and 3203 transitions. [2018-10-25 00:13:58,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3203 transitions. [2018-10-25 00:13:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-25 00:13:58,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:58,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:58,055 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:58,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:58,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1402232081, now seen corresponding path program 1 times [2018-10-25 00:13:58,056 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:58,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:58,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:58,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:58,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:58,455 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-25 00:13:58,902 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 00:13:59,106 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 00:13:59,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:59,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:13:59,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:59,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:13:59,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:13:59,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:13:59,108 INFO L87 Difference]: Start difference. First operand 2030 states and 3203 transitions. Second operand 6 states. [2018-10-25 00:14:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:02,210 INFO L93 Difference]: Finished difference Result 5883 states and 9834 transitions. [2018-10-25 00:14:02,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 00:14:02,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2018-10-25 00:14:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:02,240 INFO L225 Difference]: With dead ends: 5883 [2018-10-25 00:14:02,240 INFO L226 Difference]: Without dead ends: 3859 [2018-10-25 00:14:02,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:14:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2018-10-25 00:14:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3792. [2018-10-25 00:14:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2018-10-25 00:14:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 5638 transitions. [2018-10-25 00:14:02,403 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 5638 transitions. Word has length 193 [2018-10-25 00:14:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:02,403 INFO L481 AbstractCegarLoop]: Abstraction has 3792 states and 5638 transitions. [2018-10-25 00:14:02,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:14:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 5638 transitions. [2018-10-25 00:14:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-25 00:14:02,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:02,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:14:02,415 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:02,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash 943603689, now seen corresponding path program 1 times [2018-10-25 00:14:02,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:02,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:02,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:02,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:02,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:02,751 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 00:14:02,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:02,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:14:02,753 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-25 00:14:02,755 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], [817], [825], [833], [841], [849], [857], [865], [873], [881], [885], [887], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:14:02,821 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:14:02,822 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:14:03,999 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:14:04,000 INFO L272 AbstractInterpreter]: Visited 179 different actions 179 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:14:04,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:04,044 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:14:05,113 INFO L232 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 72.48% of their original sizes. [2018-10-25 00:14:05,113 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:14:05,805 INFO L413 sIntCurrentIteration]: We have 207 unified AI predicates [2018-10-25 00:14:05,805 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:14:05,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:14:05,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2018-10-25 00:14:05,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:05,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:14:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:14:05,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:14:05,808 INFO L87 Difference]: Start difference. First operand 3792 states and 5638 transitions. Second operand 13 states. [2018-10-25 00:15:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:06,505 INFO L93 Difference]: Finished difference Result 7788 states and 11545 transitions. [2018-10-25 00:15:06,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:15:06,505 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 208 [2018-10-25 00:15:06,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:06,524 INFO L225 Difference]: With dead ends: 7788 [2018-10-25 00:15:06,524 INFO L226 Difference]: Without dead ends: 4002 [2018-10-25 00:15:06,536 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:15:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2018-10-25 00:15:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 4000. [2018-10-25 00:15:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4000 states. [2018-10-25 00:15:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 5855 transitions. [2018-10-25 00:15:06,640 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 5855 transitions. Word has length 208 [2018-10-25 00:15:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:06,641 INFO L481 AbstractCegarLoop]: Abstraction has 4000 states and 5855 transitions. [2018-10-25 00:15:06,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:15:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 5855 transitions. [2018-10-25 00:15:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-25 00:15:06,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:06,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:06,653 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:06,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:06,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1528109442, now seen corresponding path program 1 times [2018-10-25 00:15:06,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:06,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:06,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:06,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:06,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:06,963 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 00:15:06,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:06,964 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:06,964 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-25 00:15:06,964 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], [817], [825], [833], [841], [849], [857], [865], [873], [881], [885], [887], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:06,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:06,981 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:09,371 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:15:09,372 INFO L272 AbstractInterpreter]: Visited 183 different actions 358 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 00:15:09,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:09,385 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:15:09,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:09,385 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 00:15:09,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:09,404 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:15:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:09,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:15:10,214 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 00:15:10,214 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:15:10,336 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-10-25 00:15:10,715 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-25 00:15:11,039 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 00:15:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:11,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:15:11,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 15 [2018-10-25 00:15:11,694 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:15:11,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:15:11,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:15:11,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:15:11,695 INFO L87 Difference]: Start difference. First operand 4000 states and 5855 transitions. Second operand 12 states. [2018-10-25 00:15:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:23,438 INFO L93 Difference]: Finished difference Result 24689 states and 40439 transitions. [2018-10-25 00:15:23,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-25 00:15:23,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 217 [2018-10-25 00:15:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:23,566 INFO L225 Difference]: With dead ends: 24689 [2018-10-25 00:15:23,566 INFO L226 Difference]: Without dead ends: 20903 [2018-10-25 00:15:23,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1336, Invalid=7220, Unknown=0, NotChecked=0, Total=8556 [2018-10-25 00:15:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20903 states. [2018-10-25 00:15:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20903 to 20604. [2018-10-25 00:15:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20604 states. [2018-10-25 00:15:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20604 states to 20604 states and 28801 transitions. [2018-10-25 00:15:24,272 INFO L78 Accepts]: Start accepts. Automaton has 20604 states and 28801 transitions. Word has length 217 [2018-10-25 00:15:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:24,272 INFO L481 AbstractCegarLoop]: Abstraction has 20604 states and 28801 transitions. [2018-10-25 00:15:24,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:15:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 20604 states and 28801 transitions. [2018-10-25 00:15:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-25 00:15:24,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:24,300 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:15:24,300 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:24,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1080458592, now seen corresponding path program 1 times [2018-10-25 00:15:24,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:24,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:24,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 107 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 00:15:24,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:24,950 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:24,950 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-25 00:15:24,951 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [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], [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], [338], [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], [817], [825], [833], [841], [849], [857], [865], [873], [881], [885], [887], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:24,962 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:24,962 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:26,681 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:15:26,681 INFO L272 AbstractInterpreter]: Visited 183 different actions 360 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 00:15:26,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:26,720 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:15:28,800 INFO L232 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 71.9% of their original sizes. [2018-10-25 00:15:28,800 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:15:29,590 INFO L413 sIntCurrentIteration]: We have 280 unified AI predicates [2018-10-25 00:15:29,590 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:15:29,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:15:29,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [6] total 31 [2018-10-25 00:15:29,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:15:29,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-25 00:15:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-25 00:15:29,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2018-10-25 00:15:29,592 INFO L87 Difference]: Start difference. First operand 20604 states and 28801 transitions. Second operand 27 states. [2018-10-25 00:17:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:10,609 INFO L93 Difference]: Finished difference Result 39848 states and 55883 transitions. [2018-10-25 00:17:10,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:17:10,609 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 281 [2018-10-25 00:17:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:10,679 INFO L225 Difference]: With dead ends: 39848 [2018-10-25 00:17:10,680 INFO L226 Difference]: Without dead ends: 19458 [2018-10-25 00:17:10,716 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2018-10-25 00:17:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19458 states. [2018-10-25 00:17:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19458 to 19455. [2018-10-25 00:17:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19455 states. [2018-10-25 00:17:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19455 states to 19455 states and 27253 transitions. [2018-10-25 00:17:11,141 INFO L78 Accepts]: Start accepts. Automaton has 19455 states and 27253 transitions. Word has length 281 [2018-10-25 00:17:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:11,142 INFO L481 AbstractCegarLoop]: Abstraction has 19455 states and 27253 transitions. [2018-10-25 00:17:11,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-25 00:17:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 19455 states and 27253 transitions. [2018-10-25 00:17:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-25 00:17:11,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:11,166 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:17:11,166 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:11,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1123856124, now seen corresponding path program 1 times [2018-10-25 00:17:11,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:11,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:11,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:11,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:11,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:17:11,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:11,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:17:11,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:11,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:17:11,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:17:11,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:11,439 INFO L87 Difference]: Start difference. First operand 19455 states and 27253 transitions. Second operand 4 states. [2018-10-25 00:17:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:12,638 INFO L93 Difference]: Finished difference Result 38479 states and 54051 transitions. [2018-10-25 00:17:12,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:12,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 290 [2018-10-25 00:17:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:12,700 INFO L225 Difference]: With dead ends: 38479 [2018-10-25 00:17:12,701 INFO L226 Difference]: Without dead ends: 19449 [2018-10-25 00:17:12,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19449 states. [2018-10-25 00:17:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19449 to 19449. [2018-10-25 00:17:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19449 states. [2018-10-25 00:17:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19449 states to 19449 states and 27236 transitions. [2018-10-25 00:17:13,089 INFO L78 Accepts]: Start accepts. Automaton has 19449 states and 27236 transitions. Word has length 290 [2018-10-25 00:17:13,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:13,090 INFO L481 AbstractCegarLoop]: Abstraction has 19449 states and 27236 transitions. [2018-10-25 00:17:13,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:17:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 19449 states and 27236 transitions. [2018-10-25 00:17:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-25 00:17:13,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:13,113 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:17:13,113 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:13,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash 967894443, now seen corresponding path program 1 times [2018-10-25 00:17:13,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:13,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:13,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:13,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:13,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:13,712 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:17:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:13,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:13,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:13,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 295 with the following transitions: [2018-10-25 00:17:13,929 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [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], [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], [817], [825], [833], [841], [849], [857], [865], [873], [881], [885], [887], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:13,936 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:13,937 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:15,675 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:15,676 INFO L272 AbstractInterpreter]: Visited 182 different actions 358 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 00:17:15,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:15,685 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:17:18,797 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 76.58% of their original sizes. [2018-10-25 00:17:18,797 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:17:29,750 INFO L413 sIntCurrentIteration]: We have 293 unified AI predicates [2018-10-25 00:17:29,750 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:17:29,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:17:29,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:17:29,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:29,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:17:29,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:17:29,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:17:29,752 INFO L87 Difference]: Start difference. First operand 19449 states and 27236 transitions. Second operand 13 states. Received shutdown request... [2018-10-25 00:17:36,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:17:36,163 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:17:36,170 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:17:36,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:17:36 BoogieIcfgContainer [2018-10-25 00:17:36,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:17:36,171 INFO L168 Benchmark]: Toolchain (without parser) took 237011.06 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 942.1 MB in the end (delta: 485.9 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:36,172 INFO L168 Benchmark]: CDTParser took 0.19 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 00:17:36,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1176.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:36,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 340.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -903.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:36,175 INFO L168 Benchmark]: Boogie Preprocessor took 152.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:36,175 INFO L168 Benchmark]: RCFGBuilder took 5327.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.5 MB). Peak memory consumption was 258.5 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:36,176 INFO L168 Benchmark]: TraceAbstraction took 230009.09 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 942.1 MB in the end (delta: 1.0 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:36,181 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1176.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 340.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -903.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5327.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.5 MB). Peak memory consumption was 258.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230009.09 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 942.1 MB in the end (delta: 1.0 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1548]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1548). Cancelled while BasicCegarLoop was constructing difference of abstraction (19449states) and FLOYD_HOARE automaton (currently 8 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (133 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 229.9s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 194.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1888 SDtfs, 14149 SDslu, 3027 SDs, 0 SdLazy, 19318 SolverSat, 4332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1360 GetRequests, 994 SyntacticMatches, 195 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4153 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20604occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.2s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9991165038792841 AbsIntWeakeningRatio, 0.2512820512820513 AbsIntAvgWeakeningVarsNumRemoved, 16.17820512820513 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 639 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 2258 NumberOfCodeBlocks, 2258 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2464 ConstructedInterpolants, 0 QuantifiedInterpolants, 1328959 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1041 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 547/575 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown