./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive-simple/afterrec_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/recursive-simple/afterrec_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30601811463d073f869bef96a3132d41c5e6f5ce .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 10:05:23,211 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 10:05:23,213 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 10:05:23,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 10:05:23,234 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 10:05:23,235 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 10:05:23,237 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 10:05:23,239 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 10:05:23,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 10:05:23,242 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 10:05:23,243 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 10:05:23,243 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 10:05:23,245 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 10:05:23,246 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 10:05:23,248 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 10:05:23,249 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 10:05:23,250 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 10:05:23,252 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 10:05:23,255 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 10:05:23,257 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 10:05:23,258 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 10:05:23,259 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 10:05:23,262 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 10:05:23,263 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 10:05:23,263 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 10:05:23,264 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 10:05:23,265 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 10:05:23,267 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 10:05:23,268 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 10:05:23,269 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 10:05:23,269 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 10:05:23,270 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 10:05:23,270 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 10:05:23,271 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 10:05:23,272 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 10:05:23,273 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 10:05:23,273 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 10:05:23,289 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 10:05:23,289 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 10:05:23,290 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 10:05:23,290 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 10:05:23,291 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 10:05:23,291 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 10:05:23,292 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 10:05:23,292 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 10:05:23,292 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 10:05:23,292 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 10:05:23,292 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 10:05:23,292 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 10:05:23,293 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 10:05:23,293 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 10:05:23,293 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 10:05:23,293 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 10:05:23,293 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 10:05:23,294 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 10:05:23,295 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 10:05:23,295 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 10:05:23,296 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 10:05:23,296 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:05:23,296 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 10:05:23,296 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 10:05:23,296 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 10:05:23,297 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 10:05:23,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 10:05:23,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 10:05:23,298 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/UAutomizer-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 -> Automizer 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 -> 30601811463d073f869bef96a3132d41c5e6f5ce [2018-12-31 10:05:23,347 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 10:05:23,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 10:05:23,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 10:05:23,369 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 10:05:23,369 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 10:05:23,370 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/afterrec_true-unreach-call_true-termination.c [2018-12-31 10:05:23,444 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9ab3169/f053e916a4954fc29ef82e06d80907b6/FLAGee1a2247c [2018-12-31 10:05:23,914 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 10:05:23,915 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/afterrec_true-unreach-call_true-termination.c [2018-12-31 10:05:23,921 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9ab3169/f053e916a4954fc29ef82e06d80907b6/FLAGee1a2247c [2018-12-31 10:05:24,275 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9ab3169/f053e916a4954fc29ef82e06d80907b6 [2018-12-31 10:05:24,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 10:05:24,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 10:05:24,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 10:05:24,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 10:05:24,286 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 10:05:24,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636870a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24, skipping insertion in model container [2018-12-31 10:05:24,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 10:05:24,316 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 10:05:24,486 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:05:24,490 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 10:05:24,509 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:05:24,527 INFO L195 MainTranslator]: Completed translation [2018-12-31 10:05:24,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24 WrapperNode [2018-12-31 10:05:24,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 10:05:24,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 10:05:24,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 10:05:24,530 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 10:05:24,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 10:05:24,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 10:05:24,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 10:05:24,576 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 10:05:24,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... [2018-12-31 10:05:24,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 10:05:24,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 10:05:24,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 10:05:24,598 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 10:05:24,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:05:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-12-31 10:05:24,772 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-12-31 10:05:24,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 10:05:24,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 10:05:25,109 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 10:05:25,110 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 10:05:25,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:05:25 BoogieIcfgContainer [2018-12-31 10:05:25,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 10:05:25,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 10:05:25,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 10:05:25,115 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 10:05:25,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 10:05:24" (1/3) ... [2018-12-31 10:05:25,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d8a859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:05:25, skipping insertion in model container [2018-12-31 10:05:25,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:05:24" (2/3) ... [2018-12-31 10:05:25,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d8a859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:05:25, skipping insertion in model container [2018-12-31 10:05:25,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:05:25" (3/3) ... [2018-12-31 10:05:25,121 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec_true-unreach-call_true-termination.c [2018-12-31 10:05:25,133 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 10:05:25,144 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 10:05:25,163 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 10:05:25,208 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 10:05:25,209 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 10:05:25,209 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 10:05:25,209 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 10:05:25,209 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 10:05:25,209 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 10:05:25,210 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 10:05:25,210 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 10:05:25,210 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 10:05:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-12-31 10:05:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 10:05:25,242 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:05:25,243 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:05:25,248 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:05:25,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:05:25,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1875137816, now seen corresponding path program 1 times [2018-12-31 10:05:25,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:05:25,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:05:25,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:05:25,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:05:25,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:05:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:05:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 10:05:25,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:05:25,549 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:05:25,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:05:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:05:25,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:05:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 10:05:25,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-31 10:05:25,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-12-31 10:05:25,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 10:05:25,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 10:05:25,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 10:05:25,648 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2018-12-31 10:05:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:05:25,826 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-31 10:05:25,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 10:05:25,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-31 10:05:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:05:25,836 INFO L225 Difference]: With dead ends: 19 [2018-12-31 10:05:25,836 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 10:05:25,840 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 10:05:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 10:05:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 10:05:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 10:05:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 10:05:25,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-12-31 10:05:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:05:25,870 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 10:05:25,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 10:05:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 10:05:25,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 10:05:25,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 10:05:25,915 INFO L448 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2018-12-31 10:05:25,915 INFO L448 ceAbstractionStarter]: For program point fEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-31 10:05:25,916 INFO L444 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (< 2 |f_#in~n|) [2018-12-31 10:05:25,916 INFO L451 ceAbstractionStarter]: At program point fENTRY(lines 3 8) the Hoare annotation is: true [2018-12-31 10:05:25,916 INFO L448 ceAbstractionStarter]: For program point L6-1(lines 3 8) no Hoare annotation was computed. [2018-12-31 10:05:25,917 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-12-31 10:05:25,917 INFO L448 ceAbstractionStarter]: For program point fFINAL(lines 3 8) no Hoare annotation was computed. [2018-12-31 10:05:25,917 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 10:05:25,917 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 10:05:25,917 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 10:05:25,917 INFO L451 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: true [2018-12-31 10:05:25,917 INFO L448 ceAbstractionStarter]: For program point L11-1(lines 10 12) no Hoare annotation was computed. [2018-12-31 10:05:25,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 10:05:25 BoogieIcfgContainer [2018-12-31 10:05:25,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 10:05:25,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 10:05:25,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 10:05:25,922 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 10:05:25,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:05:25" (3/4) ... [2018-12-31 10:05:25,927 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 10:05:25,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-12-31 10:05:25,939 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-31 10:05:25,939 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-31 10:05:25,988 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 10:05:25,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 10:05:25,989 INFO L168 Benchmark]: Toolchain (without parser) took 1709.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -155.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:05:25,991 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:05:25,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.42 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 10:05:25,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.42 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:05:25,993 INFO L168 Benchmark]: Boogie Preprocessor took 20.81 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:05:25,994 INFO L168 Benchmark]: RCFGBuilder took 513.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-31 10:05:25,995 INFO L168 Benchmark]: TraceAbstraction took 810.09 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2018-12-31 10:05:25,996 INFO L168 Benchmark]: Witness Printer took 66.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:05:26,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.42 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 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 46.42 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.81 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 513.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 810.09 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 66.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 1 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...