./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.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/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.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 63f7c8c7ba82d0f06d2a9c7ce1330ebd768db6f2 ...................................................................................................................................................................................................................................................................................................... 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 11:25:26,213 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 11:25:26,215 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 11:25:26,226 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 11:25:26,227 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 11:25:26,228 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 11:25:26,229 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 11:25:26,231 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 11:25:26,233 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 11:25:26,233 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 11:25:26,234 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 11:25:26,235 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 11:25:26,236 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 11:25:26,237 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 11:25:26,238 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 11:25:26,239 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 11:25:26,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 11:25:26,242 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 11:25:26,244 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 11:25:26,246 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 11:25:26,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 11:25:26,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 11:25:26,251 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 11:25:26,251 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 11:25:26,251 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 11:25:26,252 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 11:25:26,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 11:25:26,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 11:25:26,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 11:25:26,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 11:25:26,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 11:25:26,257 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 11:25:26,258 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 11:25:26,258 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 11:25:26,259 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 11:25:26,259 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 11:25:26,260 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 11:25:26,275 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 11:25:26,275 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 11:25:26,276 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 11:25:26,276 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 11:25:26,276 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 11:25:26,277 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 11:25:26,277 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 11:25:26,278 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 11:25:26,278 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 11:25:26,278 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 11:25:26,278 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 11:25:26,278 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 11:25:26,279 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 11:25:26,279 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 11:25:26,279 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 11:25:26,279 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 11:25:26,279 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 11:25:26,279 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 11:25:26,281 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 11:25:26,281 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 11:25:26,281 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 11:25:26,281 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 11:25:26,282 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 11:25:26,282 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 11:25:26,282 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 11:25:26,282 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 11:25:26,282 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 11:25:26,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 11:25:26,283 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 -> 63f7c8c7ba82d0f06d2a9c7ce1330ebd768db6f2 [2019-01-12 11:25:26,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 11:25:26,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 11:25:26,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 11:25:26,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 11:25:26,356 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 11:25:26,358 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2019-01-12 11:25:26,414 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0663d7998/a568836f123a4c33b8b31fee025994b0/FLAG220cb7ff4 [2019-01-12 11:25:26,826 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 11:25:26,827 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2019-01-12 11:25:26,833 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0663d7998/a568836f123a4c33b8b31fee025994b0/FLAG220cb7ff4 [2019-01-12 11:25:27,209 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0663d7998/a568836f123a4c33b8b31fee025994b0 [2019-01-12 11:25:27,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 11:25:27,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 11:25:27,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 11:25:27,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 11:25:27,221 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 11:25:27,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d57bdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27, skipping insertion in model container [2019-01-12 11:25:27,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 11:25:27,250 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 11:25:27,418 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 11:25:27,425 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 11:25:27,447 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 11:25:27,464 INFO L195 MainTranslator]: Completed translation [2019-01-12 11:25:27,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27 WrapperNode [2019-01-12 11:25:27,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 11:25:27,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 11:25:27,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 11:25:27,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 11:25:27,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 11:25:27,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 11:25:27,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 11:25:27,501 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 11:25:27,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (1/1) ... [2019-01-12 11:25:27,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 11:25:27,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 11:25:27,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 11:25:27,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 11:25:27,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (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 [2019-01-12 11:25:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 11:25:27,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 11:25:27,925 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 11:25:27,925 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-12 11:25:27,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:25:27 BoogieIcfgContainer [2019-01-12 11:25:27,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 11:25:27,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 11:25:27,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 11:25:27,931 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 11:25:27,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 11:25:27" (1/3) ... [2019-01-12 11:25:27,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f99bf54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 11:25:27, skipping insertion in model container [2019-01-12 11:25:27,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:25:27" (2/3) ... [2019-01-12 11:25:27,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f99bf54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 11:25:27, skipping insertion in model container [2019-01-12 11:25:27,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:25:27" (3/3) ... [2019-01-12 11:25:27,934 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2019-01-12 11:25:27,944 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 11:25:27,951 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 11:25:27,968 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 11:25:27,997 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 11:25:27,997 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 11:25:27,997 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 11:25:27,998 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 11:25:27,998 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 11:25:27,998 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 11:25:27,998 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 11:25:27,998 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 11:25:27,998 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 11:25:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-01-12 11:25:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-12 11:25:28,018 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:25:28,019 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-12 11:25:28,023 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:25:28,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:25:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1806908747, now seen corresponding path program 1 times [2019-01-12 11:25:28,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:25:28,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:25:28,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:25:28,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:25:28,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:25:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:25:28,218 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 11:25:28,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 11:25:28,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-12 11:25:28,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 11:25:28,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 11:25:28,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 11:25:28,250 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-01-12 11:25:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:25:28,321 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-01-12 11:25:28,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 11:25:28,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-12 11:25:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:25:28,331 INFO L225 Difference]: With dead ends: 21 [2019-01-12 11:25:28,331 INFO L226 Difference]: Without dead ends: 9 [2019-01-12 11:25:28,334 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 [2019-01-12 11:25:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-12 11:25:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-12 11:25:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-12 11:25:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-01-12 11:25:28,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-01-12 11:25:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:25:28,367 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-01-12 11:25:28,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 11:25:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-01-12 11:25:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-12 11:25:28,368 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:25:28,368 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 11:25:28,369 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:25:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:25:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash 179533835, now seen corresponding path program 1 times [2019-01-12 11:25:28,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:25:28,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:25:28,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:25:28,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:25:28,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:25:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:25:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:25:28,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 11:25:28,494 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 11:25:28,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:25:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:25:28,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 11:25:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:25:28,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-01-12 11:25:28,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2019-01-12 11:25:28,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 11:25:28,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 11:25:28,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-01-12 11:25:28,632 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-01-12 11:25:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:25:28,777 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-01-12 11:25:28,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-12 11:25:28,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-01-12 11:25:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:25:28,778 INFO L225 Difference]: With dead ends: 11 [2019-01-12 11:25:28,778 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 11:25:28,779 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-01-12 11:25:28,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 11:25:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 11:25:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 11:25:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 11:25:28,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-01-12 11:25:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:25:28,780 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 11:25:28,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 11:25:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 11:25:28,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 11:25:28,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 11:25:28,867 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 11:25:28,868 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-01-12 11:25:28,868 INFO L444 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) (<= (+ ULTIMATE.start_main_~main__x~0 50) 0)) [2019-01-12 11:25:28,868 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 11:25:28,868 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 11:25:28,868 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 11:25:28,869 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2019-01-12 11:25:28,869 INFO L451 ceAbstractionStarter]: At program point L49(lines 8 55) the Hoare annotation is: true [2019-01-12 11:25:28,869 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2019-01-12 11:25:28,869 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-01-12 11:25:28,869 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-01-12 11:25:28,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 11:25:28 BoogieIcfgContainer [2019-01-12 11:25:28,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 11:25:28,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 11:25:28,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 11:25:28,886 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 11:25:28,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:25:27" (3/4) ... [2019-01-12 11:25:28,890 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 11:25:28,901 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-12 11:25:28,901 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 11:25:28,953 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 11:25:28,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 11:25:28,955 INFO L168 Benchmark]: Toolchain (without parser) took 1741.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -104.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-12 11:25:28,957 INFO L168 Benchmark]: CDTParser took 0.17 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 11:25:28,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.01 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 11:25:28,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.31 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 11:25:28,965 INFO L168 Benchmark]: Boogie Preprocessor took 15.10 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 11:25:28,966 INFO L168 Benchmark]: RCFGBuilder took 410.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-12 11:25:28,970 INFO L168 Benchmark]: TraceAbstraction took 957.93 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2019-01-12 11:25:28,970 INFO L168 Benchmark]: Witness Printer took 67.43 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-12 11:25:28,977 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.01 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.31 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.10 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 410.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 957.93 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. * Witness Printer took 67.43 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 6 SDslu, 12 SDs, 0 SdLazy, 20 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 374 SizeOfPredicates, 4 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...