./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-invgen/id_build_true-unreach-call_true-termination.i --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/loop-invgen/id_build_true-unreach-call_true-termination.i -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 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 .......................................................................................................................................................................................................................................................................................................... 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 06:08:55,276 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 06:08:55,278 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 06:08:55,290 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 06:08:55,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 06:08:55,292 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 06:08:55,294 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 06:08:55,296 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 06:08:55,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 06:08:55,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 06:08:55,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 06:08:55,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 06:08:55,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 06:08:55,303 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 06:08:55,304 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 06:08:55,305 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 06:08:55,305 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 06:08:55,308 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 06:08:55,310 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 06:08:55,312 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 06:08:55,313 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 06:08:55,315 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 06:08:55,317 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 06:08:55,318 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 06:08:55,318 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 06:08:55,319 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 06:08:55,321 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 06:08:55,321 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 06:08:55,322 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 06:08:55,324 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 06:08:55,324 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 06:08:55,325 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 06:08:55,326 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 06:08:55,326 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 06:08:55,327 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 06:08:55,328 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 06:08:55,329 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 06:08:55,345 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 06:08:55,345 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 06:08:55,347 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 06:08:55,347 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 06:08:55,347 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 06:08:55,348 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 06:08:55,348 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 06:08:55,348 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 06:08:55,348 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 06:08:55,348 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 06:08:55,349 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 06:08:55,349 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 06:08:55,349 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 06:08:55,349 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 06:08:55,349 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 06:08:55,351 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 06:08:55,351 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 06:08:55,352 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 06:08:55,352 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 06:08:55,352 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 06:08:55,352 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 06:08:55,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 06:08:55,352 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 06:08:55,353 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 06:08:55,354 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 06:08:55,354 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 06:08:55,354 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 06:08:55,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 06:08:55,354 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 -> 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 [2018-12-31 06:08:55,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 06:08:55,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 06:08:55,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 06:08:55,408 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 06:08:55,408 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 06:08:55,410 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-invgen/id_build_true-unreach-call_true-termination.i [2018-12-31 06:08:55,468 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f90aa19e/edc1f6df98214ba68f70d0b092a8d80c/FLAG261c71112 [2018-12-31 06:08:55,900 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 06:08:55,901 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-invgen/id_build_true-unreach-call_true-termination.i [2018-12-31 06:08:55,906 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f90aa19e/edc1f6df98214ba68f70d0b092a8d80c/FLAG261c71112 [2018-12-31 06:08:56,260 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f90aa19e/edc1f6df98214ba68f70d0b092a8d80c [2018-12-31 06:08:56,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 06:08:56,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 06:08:56,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 06:08:56,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 06:08:56,281 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 06:08:56,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c353261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56, skipping insertion in model container [2018-12-31 06:08:56,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 06:08:56,319 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 06:08:56,557 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:08:56,562 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 06:08:56,581 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:08:56,597 INFO L195 MainTranslator]: Completed translation [2018-12-31 06:08:56,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56 WrapperNode [2018-12-31 06:08:56,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 06:08:56,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 06:08:56,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 06:08:56,599 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 06:08:56,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 06:08:56,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 06:08:56,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 06:08:56,642 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 06:08:56,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (1/1) ... [2018-12-31 06:08:56,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 06:08:56,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 06:08:56,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 06:08:56,668 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 06:08:56,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (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 06:08:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 06:08:56,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 06:08:57,197 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 06:08:57,198 INFO L280 CfgBuilder]: Removed 10 assue(true) statements. [2018-12-31 06:08:57,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:08:57 BoogieIcfgContainer [2018-12-31 06:08:57,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 06:08:57,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 06:08:57,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 06:08:57,208 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 06:08:57,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 06:08:56" (1/3) ... [2018-12-31 06:08:57,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d0cf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:08:57, skipping insertion in model container [2018-12-31 06:08:57,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:08:56" (2/3) ... [2018-12-31 06:08:57,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d0cf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:08:57, skipping insertion in model container [2018-12-31 06:08:57,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:08:57" (3/3) ... [2018-12-31 06:08:57,213 INFO L112 eAbstractionObserver]: Analyzing ICFG id_build_true-unreach-call_true-termination.i [2018-12-31 06:08:57,243 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 06:08:57,259 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-31 06:08:57,277 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-31 06:08:57,309 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 06:08:57,310 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 06:08:57,310 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 06:08:57,310 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 06:08:57,310 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 06:08:57,310 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 06:08:57,310 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 06:08:57,310 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 06:08:57,311 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 06:08:57,326 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-12-31 06:08:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-31 06:08:57,333 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:08:57,334 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-31 06:08:57,336 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:08:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:08:57,345 INFO L82 PathProgramCache]: Analyzing trace with hash 29837770, now seen corresponding path program 1 times [2018-12-31 06:08:57,347 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:08:57,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:08:57,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:08:57,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:08:57,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:08:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:08:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:08:57,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:08:57,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 06:08:57,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 06:08:57,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 06:08:57,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 06:08:57,541 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-12-31 06:08:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:08:57,664 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2018-12-31 06:08:57,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 06:08:57,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-12-31 06:08:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:08:57,675 INFO L225 Difference]: With dead ends: 29 [2018-12-31 06:08:57,676 INFO L226 Difference]: Without dead ends: 10 [2018-12-31 06:08:57,679 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 06:08:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-12-31 06:08:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-12-31 06:08:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-31 06:08:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-12-31 06:08:57,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2018-12-31 06:08:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:08:57,717 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-12-31 06:08:57,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 06:08:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-12-31 06:08:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-31 06:08:57,718 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:08:57,718 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:08:57,719 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:08:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:08:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1390518387, now seen corresponding path program 1 times [2018-12-31 06:08:57,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:08:57,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:08:57,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:08:57,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:08:57,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:08:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:08:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:08:57,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:08:57,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 06:08:57,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 06:08:57,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 06:08:57,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-31 06:08:57,838 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2018-12-31 06:08:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:08:57,978 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2018-12-31 06:08:57,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 06:08:57,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-12-31 06:08:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:08:57,979 INFO L225 Difference]: With dead ends: 13 [2018-12-31 06:08:57,980 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 06:08:57,981 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-31 06:08:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 06:08:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 06:08:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 06:08:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 06:08:57,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-12-31 06:08:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:08:57,982 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 06:08:57,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 06:08:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 06:08:57,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 06:08:57,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 06:08:58,123 INFO L448 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2018-12-31 06:08:58,124 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 06:08:58,124 INFO L444 ceAbstractionStarter]: At program point L4-5(lines 1 20) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 0 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2018-12-31 06:08:58,124 INFO L451 ceAbstractionStarter]: At program point L19(lines 10 20) the Hoare annotation is: true [2018-12-31 06:08:58,125 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-31 06:08:58,125 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 18) no Hoare annotation was computed. [2018-12-31 06:08:58,125 INFO L444 ceAbstractionStarter]: At program point L13-3(lines 13 18) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~i~0) [2018-12-31 06:08:58,125 INFO L448 ceAbstractionStarter]: For program point L13-4(lines 13 18) no Hoare annotation was computed. [2018-12-31 06:08:58,125 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-31 06:08:58,126 INFO L448 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2018-12-31 06:08:58,126 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 06:08:58,126 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 06:08:58,126 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-31 06:08:58,126 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2018-12-31 06:08:58,126 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-31 06:08:58,127 INFO L444 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 0 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2018-12-31 06:08:58,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 06:08:58 BoogieIcfgContainer [2018-12-31 06:08:58,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 06:08:58,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 06:08:58,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 06:08:58,148 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 06:08:58,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:08:57" (3/4) ... [2018-12-31 06:08:58,153 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 06:08:58,165 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-31 06:08:58,166 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 06:08:58,244 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 06:08:58,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 06:08:58,245 INFO L168 Benchmark]: Toolchain (without parser) took 1977.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -101.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-31 06:08:58,247 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:08:58,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.45 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 06:08:58,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.32 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:08:58,248 INFO L168 Benchmark]: Boogie Preprocessor took 25.54 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:08:58,249 INFO L168 Benchmark]: RCFGBuilder took 531.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-31 06:08:58,250 INFO L168 Benchmark]: TraceAbstraction took 943.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. [2018-12-31 06:08:58,250 INFO L168 Benchmark]: Witness Printer took 96.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-31 06:08:58,255 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.45 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 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 42.32 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.54 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 531.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 943.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. * Witness Printer took 96.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (cond == 1 && 0 <= i) && i < nlen - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 <= i && i < nlen - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (cond == 1 && 0 <= i) && i < nlen - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 23 SDslu, 15 SDs, 0 SdLazy, 28 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 31 HoareAnnotationTreeSize, 5 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...