./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive-simple/sum_non_eq_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f 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/sum_non_eq_true-unreach-call_true-termination_true-no-overflow.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 301c54c8b861008a1cf318e5b7f3396bc86db7c8 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 15:12:43,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 15:12:43,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 15:12:43,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 15:12:43,220 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 15:12:43,221 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 15:12:43,223 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 15:12:43,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 15:12:43,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 15:12:43,227 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 15:12:43,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 15:12:43,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 15:12:43,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 15:12:43,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 15:12:43,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 15:12:43,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 15:12:43,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 15:12:43,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 15:12:43,238 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 15:12:43,240 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 15:12:43,241 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 15:12:43,243 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 15:12:43,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 15:12:43,246 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 15:12:43,246 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 15:12:43,247 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 15:12:43,248 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 15:12:43,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 15:12:43,250 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 15:12:43,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 15:12:43,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 15:12:43,252 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 15:12:43,252 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 15:12:43,253 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 15:12:43,253 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 15:12:43,255 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 15:12:43,255 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 15:12:43,271 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 15:12:43,271 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 15:12:43,273 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 15:12:43,273 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 15:12:43,273 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 15:12:43,273 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 15:12:43,273 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 15:12:43,274 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 15:12:43,275 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 15:12:43,275 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 15:12:43,275 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 15:12:43,275 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 15:12:43,275 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 15:12:43,275 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 15:12:43,276 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 15:12:43,276 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 15:12:43,276 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 15:12:43,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 15:12:43,276 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 15:12:43,276 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 15:12:43,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 15:12:43,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 15:12:43,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 15:12:43,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 15:12:43,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 15:12:43,279 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 15:12:43,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 15:12:43,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 15:12:43,279 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 -> 301c54c8b861008a1cf318e5b7f3396bc86db7c8 [2019-01-12 15:12:43,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 15:12:43,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 15:12:43,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 15:12:43,340 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 15:12:43,340 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 15:12:43,341 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/sum_non_eq_true-unreach-call_true-termination_true-no-overflow.c [2019-01-12 15:12:43,397 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4da0581de/05dc39098a2b4490a3114abc4f26c5cc/FLAG4a4907bb0 [2019-01-12 15:12:43,815 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 15:12:43,816 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/sum_non_eq_true-unreach-call_true-termination_true-no-overflow.c [2019-01-12 15:12:43,821 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4da0581de/05dc39098a2b4490a3114abc4f26c5cc/FLAG4a4907bb0 [2019-01-12 15:12:44,201 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4da0581de/05dc39098a2b4490a3114abc4f26c5cc [2019-01-12 15:12:44,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 15:12:44,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 15:12:44,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 15:12:44,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 15:12:44,215 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 15:12:44,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c50214e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44, skipping insertion in model container [2019-01-12 15:12:44,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 15:12:44,244 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 15:12:44,447 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 15:12:44,456 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 15:12:44,477 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 15:12:44,496 INFO L195 MainTranslator]: Completed translation [2019-01-12 15:12:44,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44 WrapperNode [2019-01-12 15:12:44,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 15:12:44,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 15:12:44,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 15:12:44,499 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 15:12:44,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 15:12:44,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 15:12:44,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 15:12:44,537 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 15:12:44,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (1/1) ... [2019-01-12 15:12:44,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 15:12:44,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 15:12:44,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 15:12:44,553 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 15:12:44,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (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 [2019-01-12 15:12:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 15:12:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 15:12:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-01-12 15:12:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-01-12 15:12:44,857 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 15:12:44,858 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 15:12:44,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 03:12:44 BoogieIcfgContainer [2019-01-12 15:12:44,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 15:12:44,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 15:12:44,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 15:12:44,863 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 15:12:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 03:12:44" (1/3) ... [2019-01-12 15:12:44,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d482fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 03:12:44, skipping insertion in model container [2019-01-12 15:12:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 03:12:44" (2/3) ... [2019-01-12 15:12:44,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d482fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 03:12:44, skipping insertion in model container [2019-01-12 15:12:44,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 03:12:44" (3/3) ... [2019-01-12 15:12:44,867 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_eq_true-unreach-call_true-termination_true-no-overflow.c [2019-01-12 15:12:44,875 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 15:12:44,882 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 15:12:44,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 15:12:44,933 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 15:12:44,933 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 15:12:44,934 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 15:12:44,934 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 15:12:44,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 15:12:44,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 15:12:44,934 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 15:12:44,934 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 15:12:44,934 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 15:12:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-01-12 15:12:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-12 15:12:44,958 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 15:12:44,959 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 15:12:44,962 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 15:12:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 15:12:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-01-12 15:12:44,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 15:12:44,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 15:12:45,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 15:12:45,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 15:12:45,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 15:12:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 15:12:45,398 WARN L181 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2019-01-12 15:12:45,683 WARN L181 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 18 [2019-01-12 15:12:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 15:12:45,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 15:12:45,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-12 15:12:45,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 15:12:45,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 15:12:45,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-12 15:12:45,710 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 6 states. [2019-01-12 15:12:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 15:12:46,123 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-01-12 15:12:46,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-12 15:12:46,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-01-12 15:12:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 15:12:46,135 INFO L225 Difference]: With dead ends: 27 [2019-01-12 15:12:46,135 INFO L226 Difference]: Without dead ends: 14 [2019-01-12 15:12:46,139 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-01-12 15:12:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-01-12 15:12:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-01-12 15:12:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-01-12 15:12:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-01-12 15:12:46,180 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-01-12 15:12:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 15:12:46,181 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-01-12 15:12:46,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 15:12:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-01-12 15:12:46,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-12 15:12:46,183 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 15:12:46,183 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 15:12:46,183 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 15:12:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 15:12:46,184 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-01-12 15:12:46,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 15:12:46,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 15:12:46,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 15:12:46,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 15:12:46,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 15:12:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 15:12:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-01-12 15:12:46,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 15:12:46,722 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 [2019-01-12 15:12:46,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 15:12:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 15:12:46,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 15:12:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-01-12 15:12:47,083 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-12 15:12:47,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-01-12 15:12:47,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-01-12 15:12:47,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-01-12 15:12:47,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-01-12 15:12:47,086 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 13 states. [2019-01-12 15:12:47,399 WARN L181 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-01-12 15:12:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 15:12:47,723 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-01-12 15:12:47,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-01-12 15:12:47,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2019-01-12 15:12:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 15:12:47,725 INFO L225 Difference]: With dead ends: 19 [2019-01-12 15:12:47,725 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 15:12:47,727 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2019-01-12 15:12:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 15:12:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 15:12:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 15:12:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 15:12:47,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-01-12 15:12:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 15:12:47,729 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 15:12:47,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-01-12 15:12:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 15:12:47,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 15:12:47,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 15:12:47,788 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 15:12:47,788 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 15:12:47,788 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 15:12:47,788 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-01-12 15:12:47,789 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-01-12 15:12:47,789 INFO L451 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: true [2019-01-12 15:12:47,789 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-01-12 15:12:47,789 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 19) no Hoare annotation was computed. [2019-01-12 15:12:47,790 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-01-12 15:12:47,790 INFO L448 ceAbstractionStarter]: For program point sumEXIT(lines 4 10) no Hoare annotation was computed. [2019-01-12 15:12:47,790 INFO L444 ceAbstractionStarter]: At program point L8(line 8) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= |sum_#in~m| sum_~m)) [2019-01-12 15:12:47,790 INFO L448 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-01-12 15:12:47,790 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 9) no Hoare annotation was computed. [2019-01-12 15:12:47,790 INFO L448 ceAbstractionStarter]: For program point sumFINAL(lines 4 10) no Hoare annotation was computed. [2019-01-12 15:12:47,791 INFO L451 ceAbstractionStarter]: At program point sumENTRY(lines 4 10) the Hoare annotation is: true [2019-01-12 15:12:47,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 03:12:47 BoogieIcfgContainer [2019-01-12 15:12:47,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 15:12:47,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 15:12:47,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 15:12:47,795 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 15:12:47,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 03:12:44" (3/4) ... [2019-01-12 15:12:47,799 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 15:12:47,805 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2019-01-12 15:12:47,809 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-12 15:12:47,809 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-12 15:12:47,851 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 15:12:47,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 15:12:47,852 INFO L168 Benchmark]: Toolchain (without parser) took 3646.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 952.7 MB in the beginning and 969.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 80.2 MB. Max. memory is 11.5 GB. [2019-01-12 15:12:47,854 INFO L168 Benchmark]: CDTParser took 0.15 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. [2019-01-12 15:12:47,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.51 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 15:12:47,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.68 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 15:12:47,856 INFO L168 Benchmark]: Boogie Preprocessor took 15.64 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 15:12:47,856 INFO L168 Benchmark]: RCFGBuilder took 306.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-01-12 15:12:47,857 INFO L168 Benchmark]: TraceAbstraction took 2933.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 976.4 MB in the end (delta: 97.7 MB). Peak memory consumption was 97.7 MB. Max. memory is 11.5 GB. [2019-01-12 15:12:47,858 INFO L168 Benchmark]: Witness Printer took 57.06 ms. Allocated memory is still 1.1 GB. Free memory was 976.4 MB in the beginning and 969.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-01-12 15:12:47,862 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 288.51 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 37.68 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.64 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 306.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2933.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 976.4 MB in the end (delta: 97.7 MB). Peak memory consumption was 97.7 MB. Max. memory is 11.5 GB. * Witness Printer took 57.06 ms. Allocated memory is still 1.1 GB. Free memory was 976.4 MB in the beginning and 969.5 MB 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: 17]: 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, 15 locations, 1 error locations. SAFE Result, 2.8s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 13 SDslu, 50 SDs, 0 SdLazy, 123 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 4514 SizeOfPredicates, 7 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...