./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/trex03_true-unreach-call_true-termination.i --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/loops/trex03_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 8b8fb82fd886dd019eb017cf0c82ba4eddc31046 ................................................................................................................................................................................................................................................................................................. 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 10:52:14,174 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 10:52:14,176 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 10:52:14,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 10:52:14,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 10:52:14,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 10:52:14,190 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 10:52:14,192 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 10:52:14,194 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 10:52:14,194 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 10:52:14,196 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 10:52:14,196 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 10:52:14,197 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 10:52:14,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 10:52:14,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 10:52:14,200 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 10:52:14,201 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 10:52:14,203 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 10:52:14,205 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 10:52:14,207 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 10:52:14,208 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 10:52:14,209 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 10:52:14,212 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 10:52:14,212 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 10:52:14,213 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 10:52:14,213 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 10:52:14,214 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 10:52:14,216 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 10:52:14,216 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 10:52:14,218 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 10:52:14,218 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 10:52:14,219 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 10:52:14,219 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 10:52:14,219 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 10:52:14,220 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 10:52:14,221 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 10:52:14,221 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 10:52:14,238 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 10:52:14,238 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 10:52:14,239 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 10:52:14,239 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 10:52:14,240 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 10:52:14,240 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 10:52:14,240 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 10:52:14,240 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 10:52:14,240 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 10:52:14,240 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 10:52:14,242 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 10:52:14,242 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 10:52:14,242 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 10:52:14,242 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 10:52:14,243 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 10:52:14,243 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 10:52:14,243 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 10:52:14,243 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 10:52:14,243 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 10:52:14,243 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 10:52:14,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 10:52:14,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 10:52:14,245 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 10:52:14,245 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 10:52:14,245 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 10:52:14,246 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 10:52:14,246 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 10:52:14,246 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 10:52:14,246 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 -> 8b8fb82fd886dd019eb017cf0c82ba4eddc31046 [2019-01-12 10:52:14,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 10:52:14,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 10:52:14,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 10:52:14,312 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 10:52:14,312 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 10:52:14,313 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/trex03_true-unreach-call_true-termination.i [2019-01-12 10:52:14,367 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df0194ff/7fbb1baf437e4bf6982de46fcb98ac3f/FLAGdbe331f96 [2019-01-12 10:52:14,798 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 10:52:14,800 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/trex03_true-unreach-call_true-termination.i [2019-01-12 10:52:14,807 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df0194ff/7fbb1baf437e4bf6982de46fcb98ac3f/FLAGdbe331f96 [2019-01-12 10:52:15,166 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df0194ff/7fbb1baf437e4bf6982de46fcb98ac3f [2019-01-12 10:52:15,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 10:52:15,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 10:52:15,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 10:52:15,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 10:52:15,177 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 10:52:15,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6889cd69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15, skipping insertion in model container [2019-01-12 10:52:15,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 10:52:15,209 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 10:52:15,449 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:52:15,455 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 10:52:15,483 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:52:15,499 INFO L195 MainTranslator]: Completed translation [2019-01-12 10:52:15,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15 WrapperNode [2019-01-12 10:52:15,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 10:52:15,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 10:52:15,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 10:52:15,500 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 10:52:15,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 10:52:15,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 10:52:15,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 10:52:15,531 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 10:52:15,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (1/1) ... [2019-01-12 10:52:15,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 10:52:15,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 10:52:15,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 10:52:15,550 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 10:52:15,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (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 10:52:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 10:52:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 10:52:15,898 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 10:52:15,898 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-12 10:52:15,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:15 BoogieIcfgContainer [2019-01-12 10:52:15,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 10:52:15,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 10:52:15,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 10:52:15,903 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 10:52:15,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 10:52:15" (1/3) ... [2019-01-12 10:52:15,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb7eb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:52:15, skipping insertion in model container [2019-01-12 10:52:15,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:15" (2/3) ... [2019-01-12 10:52:15,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb7eb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:52:15, skipping insertion in model container [2019-01-12 10:52:15,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:15" (3/3) ... [2019-01-12 10:52:15,906 INFO L112 eAbstractionObserver]: Analyzing ICFG trex03_true-unreach-call_true-termination.i [2019-01-12 10:52:15,913 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 10:52:15,920 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 10:52:15,936 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 10:52:15,967 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 10:52:15,968 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 10:52:15,968 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 10:52:15,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 10:52:15,969 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 10:52:15,969 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 10:52:15,969 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 10:52:15,969 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 10:52:15,969 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 10:52:15,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-01-12 10:52:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-12 10:52:15,990 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:52:15,991 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-12 10:52:15,994 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:52:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:52:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash 30293572, now seen corresponding path program 1 times [2019-01-12 10:52:16,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:52:16,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:52:16,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:16,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:52:16,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:52:16,106 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 10:52:16,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:52:16,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 10:52:16,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 10:52:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 10:52:16,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 10:52:16,124 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-01-12 10:52:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:52:16,141 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-01-12 10:52:16,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 10:52:16,143 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-01-12 10:52:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:52:16,153 INFO L225 Difference]: With dead ends: 21 [2019-01-12 10:52:16,153 INFO L226 Difference]: Without dead ends: 9 [2019-01-12 10:52:16,157 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 10:52:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-12 10:52:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-12 10:52:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-12 10:52:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-01-12 10:52:16,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-01-12 10:52:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:52:16,186 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-01-12 10:52:16,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 10:52:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-01-12 10:52:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-12 10:52:16,187 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:52:16,187 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-12 10:52:16,188 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:52:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:52:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash 29816916, now seen corresponding path program 1 times [2019-01-12 10:52:16,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:52:16,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:52:16,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:16,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:52:16,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:52:16,402 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 10:52:16,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:52:16,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 10:52:16,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 10:52:16,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 10:52:16,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 10:52:16,404 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 4 states. [2019-01-12 10:52:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:52:16,526 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2019-01-12 10:52:16,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 10:52:16,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-01-12 10:52:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:52:16,527 INFO L225 Difference]: With dead ends: 9 [2019-01-12 10:52:16,527 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 10:52:16,529 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 10:52:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 10:52:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 10:52:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 10:52:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 10:52:16,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-01-12 10:52:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:52:16,533 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 10:52:16,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 10:52:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 10:52:16,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 10:52:16,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 10:52:16,575 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 10:52:16,575 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-01-12 10:52:16,575 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2019-01-12 10:52:16,575 INFO L451 ceAbstractionStarter]: At program point L15-2(lines 15 22) the Hoare annotation is: true [2019-01-12 10:52:16,576 INFO L448 ceAbstractionStarter]: For program point L15-3(lines 15 22) no Hoare annotation was computed. [2019-01-12 10:52:16,576 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2019-01-12 10:52:16,576 INFO L451 ceAbstractionStarter]: At program point L3-2(lines 2 7) the Hoare annotation is: true [2019-01-12 10:52:16,576 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 10:52:16,576 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 10:52:16,576 INFO L451 ceAbstractionStarter]: At program point L24(lines 10 25) the Hoare annotation is: true [2019-01-12 10:52:16,576 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-01-12 10:52:16,577 INFO L448 ceAbstractionStarter]: For program point L18-2(lines 17 19) no Hoare annotation was computed. [2019-01-12 10:52:16,577 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2019-01-12 10:52:16,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 10:52:16 BoogieIcfgContainer [2019-01-12 10:52:16,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 10:52:16,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 10:52:16,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 10:52:16,584 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 10:52:16,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:15" (3/4) ... [2019-01-12 10:52:16,588 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 10:52:16,597 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-12 10:52:16,597 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 10:52:16,644 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 10:52:16,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 10:52:16,645 INFO L168 Benchmark]: Toolchain (without parser) took 1474.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:16,646 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-01-12 10:52:16,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.08 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:16,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.48 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:16,648 INFO L168 Benchmark]: Boogie Preprocessor took 19.00 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:16,648 INFO L168 Benchmark]: RCFGBuilder took 349.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:16,649 INFO L168 Benchmark]: TraceAbstraction took 683.17 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:16,650 INFO L168 Benchmark]: Witness Printer took 59.92 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. [2019-01-12 10:52:16,653 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 327.08 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 30.48 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.00 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 349.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 683.17 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: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * Witness Printer took 59.92 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 2]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 1 SDslu, 10 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 3 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 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...