./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i --full-output --rcfgbuilder.size.of.a.code.block SingleStatement --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -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 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77e92a11a4549a6f714898b45c2d349723607a29 --rcfgbuilder.size.of.a.code.block SingleStatement ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-22 09:51:03,343 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 09:51:03,345 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 09:51:03,366 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 09:51:03,366 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 09:51:03,367 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 09:51:03,369 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 09:51:03,371 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 09:51:03,373 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 09:51:03,374 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 09:51:03,375 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 09:51:03,375 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 09:51:03,376 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 09:51:03,377 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 09:51:03,379 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 09:51:03,379 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 09:51:03,380 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 09:51:03,383 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 09:51:03,385 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 09:51:03,387 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 09:51:03,388 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 09:51:03,392 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 09:51:03,397 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 09:51:03,397 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 09:51:03,398 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 09:51:03,399 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 09:51:03,403 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 09:51:03,406 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 09:51:03,407 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 09:51:03,411 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 09:51:03,411 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 09:51:03,412 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 09:51:03,412 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 09:51:03,412 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 09:51:03,413 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 09:51:03,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 09:51:03,416 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 09:51:03,435 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 09:51:03,435 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 09:51:03,438 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 09:51:03,438 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 09:51:03,439 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 09:51:03,439 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 09:51:03,439 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 09:51:03,439 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 09:51:03,439 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 09:51:03,440 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 09:51:03,440 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 09:51:03,441 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 09:51:03,441 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 09:51:03,441 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 09:51:03,442 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 09:51:03,442 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 09:51:03,442 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 09:51:03,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 09:51:03,443 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 09:51:03,443 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 09:51:03,443 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 09:51:03,443 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 09:51:03,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 09:51:03,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 09:51:03,444 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 09:51:03,444 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 09:51:03,444 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:51:03,444 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 09:51:03,445 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 09:51:03,445 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 09:51:03,445 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 09:51:03,445 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 09:51:03,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 09:51:03,445 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 09:51:03,448 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77e92a11a4549a6f714898b45c2d349723607a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2018-10-22 09:51:03,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 09:51:03,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 09:51:03,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 09:51:03,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 09:51:03,526 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 09:51:03,527 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-10-22 09:51:03,590 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24bb3ed8d/ce8f364102a4400da749e3aa5a6c6980/FLAG7ff4ef63b [2018-10-22 09:51:04,102 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 09:51:04,103 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-10-22 09:51:04,110 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24bb3ed8d/ce8f364102a4400da749e3aa5a6c6980/FLAG7ff4ef63b [2018-10-22 09:51:04,123 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24bb3ed8d/ce8f364102a4400da749e3aa5a6c6980 [2018-10-22 09:51:04,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 09:51:04,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 09:51:04,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 09:51:04,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 09:51:04,134 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 09:51:04,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1356e9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04, skipping insertion in model container [2018-10-22 09:51:04,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 09:51:04,179 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 09:51:04,350 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:51:04,355 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 09:51:04,376 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:51:04,393 INFO L193 MainTranslator]: Completed translation [2018-10-22 09:51:04,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04 WrapperNode [2018-10-22 09:51:04,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 09:51:04,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 09:51:04,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 09:51:04,395 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 09:51:04,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 09:51:04,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 09:51:04,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 09:51:04,418 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 09:51:04,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (1/1) ... [2018-10-22 09:51:04,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 09:51:04,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 09:51:04,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 09:51:04,443 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 09:51:04,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (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 [2018-10-22 09:51:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 09:51:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 09:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 09:51:04,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 09:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 09:51:04,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 09:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 09:51:04,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 09:51:05,186 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 09:51:05,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:51:05 BoogieIcfgContainer [2018-10-22 09:51:05,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 09:51:05,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 09:51:05,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 09:51:05,192 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 09:51:05,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:51:04" (1/3) ... [2018-10-22 09:51:05,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688ff768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:51:05, skipping insertion in model container [2018-10-22 09:51:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:04" (2/3) ... [2018-10-22 09:51:05,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688ff768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:51:05, skipping insertion in model container [2018-10-22 09:51:05,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:51:05" (3/3) ... [2018-10-22 09:51:05,196 INFO L112 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-10-22 09:51:05,206 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 09:51:05,215 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 09:51:05,233 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 09:51:05,269 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 09:51:05,269 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 09:51:05,270 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 09:51:05,270 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 09:51:05,270 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 09:51:05,270 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 09:51:05,270 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 09:51:05,270 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 09:51:05,271 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 09:51:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-10-22 09:51:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-22 09:51:05,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:51:05,306 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] [2018-10-22 09:51:05,310 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:51:05,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2116009862, now seen corresponding path program 1 times [2018-10-22 09:51:05,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:51:05,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:05,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:05,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:05,367 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:51:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:51:05,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:51:05,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-22 09:51:05,628 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:51:05,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 09:51:05,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 09:51:05,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-22 09:51:05,654 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 7 states. [2018-10-22 09:51:05,998 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-10-22 09:51:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:51:06,182 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2018-10-22 09:51:06,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 09:51:06,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-10-22 09:51:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:51:06,194 INFO L225 Difference]: With dead ends: 79 [2018-10-22 09:51:06,194 INFO L226 Difference]: Without dead ends: 50 [2018-10-22 09:51:06,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-22 09:51:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-22 09:51:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-22 09:51:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-22 09:51:06,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-22 09:51:06,242 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2018-10-22 09:51:06,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:51:06,242 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-22 09:51:06,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 09:51:06,243 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-22 09:51:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-22 09:51:06,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:51:06,244 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-22 09:51:06,245 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:51:06,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash -950375298, now seen corresponding path program 1 times [2018-10-22 09:51:06,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:51:06,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:06,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:06,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:06,247 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:51:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:51:06,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:06,438 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:51:06,439 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-10-22 09:51:06,442 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [23], [28], [33], [36], [42], [48], [56], [57], [58], [59], [60], [65], [66], [70], [75], [87], [90], [92], [95], [97], [98], [99], [100], [102], [103], [104] [2018-10-22 09:51:06,490 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:51:06,490 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:51:06,742 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-22 09:51:06,743 INFO L272 AbstractInterpreter]: Visited 42 different actions 46 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-10-22 09:51:06,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:06,754 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-22 09:51:06,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:06,755 INFO L197 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 [2018-10-22 09:51:06,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:06,767 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 09:51:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:06,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 09:51:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:51:07,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 09:51:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:51:07,732 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:51:07,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [9] total 18 [2018-10-22 09:51:07,732 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:51:07,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 09:51:07,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 09:51:07,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2018-10-22 09:51:07,736 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 9 states. [2018-10-22 09:51:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:51:07,973 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-10-22 09:51:07,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-22 09:51:07,975 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-10-22 09:51:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:51:07,977 INFO L225 Difference]: With dead ends: 61 [2018-10-22 09:51:07,978 INFO L226 Difference]: Without dead ends: 59 [2018-10-22 09:51:07,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-10-22 09:51:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-22 09:51:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2018-10-22 09:51:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-22 09:51:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2018-10-22 09:51:07,993 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 43 [2018-10-22 09:51:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:51:07,993 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2018-10-22 09:51:07,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 09:51:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2018-10-22 09:51:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-22 09:51:07,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:51:07,997 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2018-10-22 09:51:07,997 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:51:07,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -104105966, now seen corresponding path program 1 times [2018-10-22 09:51:07,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:51:07,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:07,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:07,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:08,000 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:51:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-22 09:51:08,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:08,290 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:51:08,291 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 60 with the following transitions: [2018-10-22 09:51:08,291 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [23], [28], [33], [36], [42], [48], [56], [57], [58], [59], [60], [65], [66], [70], [75], [78], [80], [81], [82], [87], [90], [92], [95], [97], [98], [99], [100], [102], [103], [104], [105] [2018-10-22 09:51:08,294 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:51:08,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:51:08,825 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-22 09:51:08,826 INFO L272 AbstractInterpreter]: Visited 47 different actions 336 times. Merged at 8 different actions 120 times. Widened at 1 different actions 11 times. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-10-22 09:51:08,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:08,839 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-22 09:51:08,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:08,840 INFO L197 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 [2018-10-22 09:51:08,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:08,849 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 09:51:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:08,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 09:51:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:09,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 09:51:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:09,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:09,741 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 09:51:09,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:09,769 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 09:51:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:09,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 09:51:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:09,963 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 09:51:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:10,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 09:51:10,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14, 14, 14] total 28 [2018-10-22 09:51:10,226 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 09:51:10,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-22 09:51:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-22 09:51:10,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2018-10-22 09:51:10,231 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2018-10-22 09:51:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:51:11,134 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2018-10-22 09:51:11,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-22 09:51:11,135 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2018-10-22 09:51:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:51:11,137 INFO L225 Difference]: With dead ends: 67 [2018-10-22 09:51:11,138 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 09:51:11,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 212 SyntacticMatches, 13 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2018-10-22 09:51:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 09:51:11,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 09:51:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 09:51:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 09:51:11,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2018-10-22 09:51:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:51:11,142 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 09:51:11,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-22 09:51:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 09:51:11,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 09:51:11,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 09:51:11,386 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 09:51:11,387 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:51:11,387 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:51:11,387 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 09:51:11,387 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 09:51:11,387 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 09:51:11,387 INFO L425 ceAbstractionStarter]: For program point L35-2(lines 35 39) no Hoare annotation was computed. [2018-10-22 09:51:11,387 INFO L425 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-10-22 09:51:11,387 INFO L425 ceAbstractionStarter]: For program point L35-4(lines 35 39) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point L35-5(line 35) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point L35-6(line 35) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L421 ceAbstractionStarter]: At program point L35-7(lines 35 39) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= 1 main_~p~0)) [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 42) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-10-22 09:51:11,388 INFO L425 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2018-10-22 09:51:11,389 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 09:51:11,389 INFO L428 ceAbstractionStarter]: At program point L40(lines 10 42) the Hoare annotation is: true [2018-10-22 09:51:11,389 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2018-10-22 09:51:11,389 INFO L421 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2018-10-22 09:51:11,389 INFO L425 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-10-22 09:51:11,389 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-10-22 09:51:11,389 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 11 42) no Hoare annotation was computed. [2018-10-22 09:51:11,389 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L25(lines 11 42) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-22 09:51:11,390 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 42) the Hoare annotation is: true [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L26(lines 11 42) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-10-22 09:51:11,391 INFO L425 ceAbstractionStarter]: For program point L18-2(line 18) no Hoare annotation was computed. [2018-10-22 09:51:11,392 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 09:51:11,392 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-10-22 09:51:11,392 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 09:51:11,392 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 09:51:11,392 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:51:11,392 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 09:51:11,392 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 09:51:11,393 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:51:11,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:51:11 BoogieIcfgContainer [2018-10-22 09:51:11,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 09:51:11,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 09:51:11,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 09:51:11,408 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 09:51:11,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:51:05" (3/4) ... [2018-10-22 09:51:11,412 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 09:51:11,418 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 09:51:11,418 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 09:51:11,418 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 09:51:11,423 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-22 09:51:11,424 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-22 09:51:11,424 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 09:51:11,476 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 09:51:11,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 09:51:11,477 INFO L168 Benchmark]: Toolchain (without parser) took 7348.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -126.3 MB). Peak memory consumption was 80.8 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:11,478 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:51:11,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.61 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:11,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.04 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:51:11,479 INFO L168 Benchmark]: Boogie Preprocessor took 25.01 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:51:11,480 INFO L168 Benchmark]: RCFGBuilder took 744.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -148.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:11,481 INFO L168 Benchmark]: TraceAbstraction took 6218.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 89.2 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:11,481 INFO L168 Benchmark]: Witness Printer took 68.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:11,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.61 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.04 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.01 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 744.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -148.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6218.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 89.2 MB. Max. memory is 11.5 GB. * Witness Printer took 68.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + 2 * i && 1 <= leader_len) && 1 <= p - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 1 error locations. SAFE Result, 6.1s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 139 SDtfs, 76 SDslu, 940 SDs, 0 SdLazy, 482 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 294 SyntacticMatches, 14 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 70 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 453 ConstructedInterpolants, 4 QuantifiedInterpolants, 74617 SizeOfPredicates, 28 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 90/116 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...