./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/structure_assignment_true-termination.c_true-unreach-call.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/ldv-regression/structure_assignment_true-termination.c_true-unreach-call.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 c2b2c558ebaf05bdc56eb3149a9975d865a1792e .......................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 15:48:26,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:48:26,250 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:48:26,262 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:48:26,263 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:48:26,264 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:48:26,266 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:48:26,268 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:48:26,269 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:48:26,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:48:26,271 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:48:26,272 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:48:26,273 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:48:26,274 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:48:26,276 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:48:26,276 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:48:26,278 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:48:26,279 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:48:26,282 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:48:26,284 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:48:26,285 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:48:26,287 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:48:26,289 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:48:26,290 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:48:26,290 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:48:26,291 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:48:26,292 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:48:26,294 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:48:26,295 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:48:26,296 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:48:26,296 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:48:26,297 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:48:26,297 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:48:26,298 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:48:26,299 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:48:26,300 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:48:26,300 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:48:26,316 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:48:26,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:48:26,317 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:48:26,318 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:48:26,318 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:48:26,319 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:48:26,319 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:48:26,319 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:48:26,319 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:48:26,319 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:48:26,319 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:48:26,320 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:48:26,321 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:48:26,321 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:48:26,321 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:48:26,321 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:48:26,322 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:48:26,322 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:48:26,322 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:48:26,323 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:48:26,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:48:26,323 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:48:26,323 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:48:26,324 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:48:26,324 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:48:26,324 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:48:26,324 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:48:26,324 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 -> c2b2c558ebaf05bdc56eb3149a9975d865a1792e [2019-01-14 15:48:26,361 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:48:26,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:48:26,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:48:26,380 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:48:26,381 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:48:26,381 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/structure_assignment_true-termination.c_true-unreach-call.i [2019-01-14 15:48:26,441 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df4f0fc39/a3b9fb4a50a848c285ce8773d89ec7b1/FLAG35da47881 [2019-01-14 15:48:26,949 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:48:26,950 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/structure_assignment_true-termination.c_true-unreach-call.i [2019-01-14 15:48:26,957 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df4f0fc39/a3b9fb4a50a848c285ce8773d89ec7b1/FLAG35da47881 [2019-01-14 15:48:27,287 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df4f0fc39/a3b9fb4a50a848c285ce8773d89ec7b1 [2019-01-14 15:48:27,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:48:27,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:48:27,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:48:27,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:48:27,300 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:48:27,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d03eccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27, skipping insertion in model container [2019-01-14 15:48:27,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:48:27,331 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:48:27,572 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:48:27,580 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:48:27,604 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:48:27,641 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:48:27,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27 WrapperNode [2019-01-14 15:48:27,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:48:27,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:48:27,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:48:27,643 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:48:27,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:48:27,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:48:27,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:48:27,685 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:48:27,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (1/1) ... [2019-01-14 15:48:27,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:48:27,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:48:27,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:48:27,706 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:48:27,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (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 [2019-01-14 15:48:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 15:48:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:48:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:48:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 15:48:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-01-14 15:48:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 15:48:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 15:48:28,068 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:48:28,069 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-14 15:48:28,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:48:28 BoogieIcfgContainer [2019-01-14 15:48:28,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:48:28,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:48:28,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:48:28,081 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:48:28,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:48:27" (1/3) ... [2019-01-14 15:48:28,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edd306d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:48:28, skipping insertion in model container [2019-01-14 15:48:28,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:48:27" (2/3) ... [2019-01-14 15:48:28,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edd306d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:48:28, skipping insertion in model container [2019-01-14 15:48:28,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:48:28" (3/3) ... [2019-01-14 15:48:28,092 INFO L112 eAbstractionObserver]: Analyzing ICFG structure_assignment_true-termination.c_true-unreach-call.i [2019-01-14 15:48:28,109 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:48:28,127 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:48:28,158 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:48:28,187 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:48:28,187 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:48:28,188 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:48:28,188 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:48:28,188 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:48:28,188 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:48:28,188 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:48:28,189 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:48:28,189 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:48:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-01-14 15:48:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 15:48:28,214 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:48:28,215 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 15:48:28,217 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:48:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:48:28,224 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-01-14 15:48:28,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:48:28,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:48:28,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:48:28,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:48:28,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:48:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:48:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:48:28,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:48:28,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 15:48:28,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 15:48:28,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 15:48:28,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 15:48:28,410 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-01-14 15:48:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:48:28,430 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-01-14 15:48:28,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 15:48:28,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-01-14 15:48:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:48:28,438 INFO L225 Difference]: With dead ends: 13 [2019-01-14 15:48:28,438 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 15:48:28,442 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 15:48:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 15:48:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 15:48:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 15:48:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 15:48:28,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-01-14 15:48:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:48:28,472 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 15:48:28,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 15:48:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 15:48:28,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 15:48:28,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 15:48:28,489 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 15:48:28,489 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-14 15:48:28,489 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 15:48:28,490 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 15:48:28,490 INFO L451 ceAbstractionStarter]: At program point L25(lines 19 26) the Hoare annotation is: true [2019-01-14 15:48:28,490 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-01-14 15:48:28,491 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-01-14 15:48:28,492 INFO L448 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2019-01-14 15:48:28,492 INFO L448 ceAbstractionStarter]: For program point L7(lines 1 26) no Hoare annotation was computed. [2019-01-14 15:48:28,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:48:28 BoogieIcfgContainer [2019-01-14 15:48:28,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:48:28,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:48:28,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:48:28,500 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:48:28,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:48:28" (3/4) ... [2019-01-14 15:48:28,505 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 15:48:28,517 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-14 15:48:28,517 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 15:48:28,517 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-14 15:48:28,565 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:48:28,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:48:28,567 INFO L168 Benchmark]: Toolchain (without parser) took 1273.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:48:28,569 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-01-14 15:48:28,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.04 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:48:28,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:48:28,571 INFO L168 Benchmark]: Boogie Preprocessor took 20.61 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:48:28,572 INFO L168 Benchmark]: RCFGBuilder took 366.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-01-14 15:48:28,573 INFO L168 Benchmark]: TraceAbstraction took 424.89 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-01-14 15:48:28,574 INFO L168 Benchmark]: Witness Printer took 66.83 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. [2019-01-14 15:48:28,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 346.04 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 41.76 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.61 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 366.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 424.89 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Witness Printer took 66.83 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: 9]: 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: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...