./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 91b1670e 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 0.1.24-91b1670 [2018-11-28 18:21:57,192 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:21:57,196 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:21:57,214 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:21:57,215 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:21:57,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:21:57,219 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:21:57,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:21:57,226 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:21:57,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:21:57,231 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:21:57,232 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:21:57,234 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:21:57,236 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:21:57,245 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:21:57,246 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:21:57,246 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:21:57,248 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:21:57,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:21:57,252 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:21:57,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:21:57,254 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:21:57,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:21:57,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:21:57,257 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:21:57,258 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:21:57,260 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:21:57,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:21:57,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:21:57,262 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:21:57,262 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:21:57,263 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:21:57,263 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:21:57,263 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:21:57,265 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:21:57,266 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:21:57,266 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:21:57,282 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:21:57,283 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:21:57,284 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:21:57,284 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:21:57,285 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:21:57,285 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:21:57,285 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:21:57,286 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:21:57,286 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:21:57,286 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:21:57,286 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:21:57,286 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:21:57,286 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:21:57,288 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:21:57,288 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:21:57,289 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:21:57,289 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:21:57,289 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:21:57,289 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:21:57,289 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:21:57,289 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:21:57,291 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:21:57,291 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:21:57,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:21:57,291 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:21:57,291 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:21:57,292 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:21:57,292 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:21:57,292 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:21:57,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:21:57,292 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 [2018-11-28 18:21:57,338 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:21:57,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:21:57,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:21:57,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:21:57,357 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:21:57,358 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-11-28 18:21:57,418 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d69a2dd/3d2cc753d2a0405bb8fef448d9f31268/FLAGfd683c21b [2018-11-28 18:21:57,855 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:21:57,856 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-11-28 18:21:57,863 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d69a2dd/3d2cc753d2a0405bb8fef448d9f31268/FLAGfd683c21b [2018-11-28 18:21:58,217 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d69a2dd/3d2cc753d2a0405bb8fef448d9f31268 [2018-11-28 18:21:58,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:21:58,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:21:58,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:21:58,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:21:58,227 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:21:58,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef72e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58, skipping insertion in model container [2018-11-28 18:21:58,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:21:58,264 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:21:58,485 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:21:58,491 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:21:58,510 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:21:58,524 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:21:58,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58 WrapperNode [2018-11-28 18:21:58,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:21:58,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:21:58,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:21:58,526 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:21:58,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:21:58,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:21:58,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:21:58,545 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:21:58,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... [2018-11-28 18:21:58,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:21:58,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:21:58,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:21:58,565 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:21:58,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:21:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:21:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:21:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:21:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:21:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:21:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:21:58,919 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:21:58,919 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 18:21:58,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:21:58 BoogieIcfgContainer [2018-11-28 18:21:58,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:21:58,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:21:58,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:21:58,925 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:21:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:21:58" (1/3) ... [2018-11-28 18:21:58,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64061dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:21:58, skipping insertion in model container [2018-11-28 18:21:58,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:21:58" (2/3) ... [2018-11-28 18:21:58,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64061dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:21:58, skipping insertion in model container [2018-11-28 18:21:58,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:21:58" (3/3) ... [2018-11-28 18:21:58,930 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-11-28 18:21:58,942 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:21:58,951 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:21:58,983 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:21:59,053 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:21:59,054 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:21:59,054 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:21:59,054 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:21:59,055 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:21:59,055 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:21:59,055 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:21:59,055 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:21:59,055 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:21:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-28 18:21:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:21:59,100 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:59,101 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:59,104 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:59,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:59,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-11-28 18:21:59,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:59,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:59,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:59,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:59,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:59,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:21:59,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:21:59,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:21:59,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:21:59,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:21:59,315 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2018-11-28 18:21:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:59,349 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-28 18:21:59,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:21:59,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 18:21:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:21:59,360 INFO L225 Difference]: With dead ends: 26 [2018-11-28 18:21:59,361 INFO L226 Difference]: Without dead ends: 13 [2018-11-28 18:21:59,364 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 [2018-11-28 18:21:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-28 18:21:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-28 18:21:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 18:21:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-28 18:21:59,398 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-28 18:21:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:21:59,399 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-28 18:21:59,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:21:59,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-28 18:21:59,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:21:59,400 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:21:59,400 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:21:59,401 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:21:59,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:21:59,401 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-11-28 18:21:59,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:21:59,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:21:59,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:59,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:59,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:21:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:59,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:21:59,710 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 [2018-11-28 18:21:59,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:21:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:21:59,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:21:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:21:59,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:21:59,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2018-11-28 18:21:59,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:21:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:21:59,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:21:59,875 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-11-28 18:21:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:21:59,999 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-11-28 18:21:59,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:21:59,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-28 18:22:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:22:00,000 INFO L225 Difference]: With dead ends: 15 [2018-11-28 18:22:00,001 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:22:00,002 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:22:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:22:00,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:22:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:22:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:22:00,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-28 18:22:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:22:00,004 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:22:00,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:22:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:22:00,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:22:00,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:22:00,078 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:22:00,078 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:22:00,078 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:22:00,079 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:22:00,079 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:22:00,079 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:22:00,079 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:22:00,079 INFO L444 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ main_~main__x~0 2) main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2018-11-28 18:22:00,080 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: true [2018-11-28 18:22:00,080 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2018-11-28 18:22:00,080 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2018-11-28 18:22:00,080 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2018-11-28 18:22:00,080 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-11-28 18:22:00,080 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2018-11-28 18:22:00,080 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-28 18:22:00,081 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-11-28 18:22:00,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:22:00 BoogieIcfgContainer [2018-11-28 18:22:00,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:22:00,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:22:00,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:22:00,098 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:22:00,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:21:58" (3/4) ... [2018-11-28 18:22:00,102 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:22:00,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:22:00,111 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:22:00,116 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-28 18:22:00,116 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 18:22:00,170 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:22:00,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:22:00,172 INFO L168 Benchmark]: Toolchain (without parser) took 1951.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -112.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:22:00,174 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:22:00,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:22:00,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.89 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:22:00,176 INFO L168 Benchmark]: Boogie Preprocessor took 19.40 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:22:00,176 INFO L168 Benchmark]: RCFGBuilder took 355.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -170.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:22:00,177 INFO L168 Benchmark]: TraceAbstraction took 1175.46 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: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:22:00,178 INFO L168 Benchmark]: Witness Printer took 73.61 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. [2018-11-28 18:22:00,182 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 18.89 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.40 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 355.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -170.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1175.46 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: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. * Witness Printer took 73.61 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 6 SDslu, 29 SDs, 0 SdLazy, 16 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 726 SizeOfPredicates, 4 NumberOfNonLiveVariables, 45 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...