./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa 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/bitvector/sum02_false-unreach-call_true-no-overflow.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 f2964994cdaa1e60b18f6e8e9960cc97625ea606 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-30 15:47:57,242 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-30 15:47:57,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-30 15:47:57,257 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-30 15:47:57,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-30 15:47:57,259 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-30 15:47:57,260 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-30 15:47:57,262 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-30 15:47:57,264 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-30 15:47:57,265 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-30 15:47:57,266 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-30 15:47:57,266 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-30 15:47:57,267 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-30 15:47:57,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-30 15:47:57,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-30 15:47:57,272 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-30 15:47:57,273 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-30 15:47:57,283 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-30 15:47:57,285 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-30 15:47:57,290 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-30 15:47:57,291 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-30 15:47:57,294 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-30 15:47:57,299 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-30 15:47:57,300 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-30 15:47:57,300 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-30 15:47:57,301 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-30 15:47:57,303 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-30 15:47:57,308 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-30 15:47:57,308 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-30 15:47:57,309 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-30 15:47:57,310 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-30 15:47:57,310 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-30 15:47:57,310 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-30 15:47:57,310 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-30 15:47:57,314 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-30 15:47:57,316 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-30 15:47:57,317 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-30 15:47:57,341 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-30 15:47:57,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-30 15:47:57,344 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-30 15:47:57,345 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-30 15:47:57,345 INFO L133 SettingsManager]: * Use SBE=true [2018-12-30 15:47:57,345 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-30 15:47:57,345 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-30 15:47:57,346 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-30 15:47:57,346 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-30 15:47:57,346 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-30 15:47:57,346 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-30 15:47:57,346 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-30 15:47:57,347 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-30 15:47:57,347 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-30 15:47:57,347 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-30 15:47:57,347 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-30 15:47:57,347 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-30 15:47:57,350 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-30 15:47:57,351 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-30 15:47:57,351 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-30 15:47:57,351 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-30 15:47:57,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-30 15:47:57,351 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-30 15:47:57,351 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-30 15:47:57,352 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-30 15:47:57,352 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-30 15:47:57,352 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-30 15:47:57,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-30 15:47:57,352 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 -> f2964994cdaa1e60b18f6e8e9960cc97625ea606 [2018-12-30 15:47:57,411 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-30 15:47:57,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-30 15:47:57,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-30 15:47:57,438 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-30 15:47:57,438 INFO L276 PluginConnector]: CDTParser initialized [2018-12-30 15:47:57,439 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2018-12-30 15:47:57,495 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc2a8798/a7a188212da2427fb9ef0524a6557364/FLAGd97d5855b [2018-12-30 15:47:57,918 INFO L307 CDTParser]: Found 1 translation units. [2018-12-30 15:47:57,919 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2018-12-30 15:47:57,924 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc2a8798/a7a188212da2427fb9ef0524a6557364/FLAGd97d5855b [2018-12-30 15:47:58,299 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc2a8798/a7a188212da2427fb9ef0524a6557364 [2018-12-30 15:47:58,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-30 15:47:58,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-30 15:47:58,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-30 15:47:58,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-30 15:47:58,310 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-30 15:47:58,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e42a49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58, skipping insertion in model container [2018-12-30 15:47:58,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-30 15:47:58,341 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-30 15:47:58,562 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 15:47:58,570 INFO L191 MainTranslator]: Completed pre-run [2018-12-30 15:47:58,588 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 15:47:58,603 INFO L195 MainTranslator]: Completed translation [2018-12-30 15:47:58,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58 WrapperNode [2018-12-30 15:47:58,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-30 15:47:58,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-30 15:47:58,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-30 15:47:58,605 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-30 15:47:58,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-30 15:47:58,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-30 15:47:58,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-30 15:47:58,636 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-30 15:47:58,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (1/1) ... [2018-12-30 15:47:58,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-30 15:47:58,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-30 15:47:58,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-30 15:47:58,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-30 15:47:58,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (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 [2018-12-30 15:47:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-30 15:47:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-30 15:47:58,941 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-30 15:47:58,942 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-30 15:47:58,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 03:47:58 BoogieIcfgContainer [2018-12-30 15:47:58,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-30 15:47:58,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-30 15:47:58,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-30 15:47:58,946 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-30 15:47:58,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.12 03:47:58" (1/3) ... [2018-12-30 15:47:58,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3181e9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 03:47:58, skipping insertion in model container [2018-12-30 15:47:58,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 03:47:58" (2/3) ... [2018-12-30 15:47:58,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3181e9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 03:47:58, skipping insertion in model container [2018-12-30 15:47:58,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 03:47:58" (3/3) ... [2018-12-30 15:47:58,950 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02_false-unreach-call_true-no-overflow.i [2018-12-30 15:47:58,958 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-30 15:47:58,965 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-30 15:47:58,981 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-30 15:47:59,018 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-30 15:47:59,019 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-30 15:47:59,020 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-30 15:47:59,020 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-30 15:47:59,020 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-30 15:47:59,020 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-30 15:47:59,020 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-30 15:47:59,020 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-30 15:47:59,020 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-30 15:47:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-12-30 15:47:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-30 15:47:59,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 15:47:59,048 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-30 15:47:59,054 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 15:47:59,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 15:47:59,061 INFO L82 PathProgramCache]: Analyzing trace with hash 29776202, now seen corresponding path program 1 times [2018-12-30 15:47:59,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 15:47:59,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 15:47:59,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 15:47:59,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 15:47:59,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 15:47:59,148 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 15:47:59,148 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 15:47:59,148 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 15:47:59,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 15:47:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 15:47:59,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 15:47:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 15:47:59,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 15:47:59,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-30 15:47:59,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 15:47:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 15:47:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 15:47:59,350 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-12-30 15:47:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 15:47:59,400 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-12-30 15:47:59,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 15:47:59,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-12-30 15:47:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 15:47:59,413 INFO L225 Difference]: With dead ends: 19 [2018-12-30 15:47:59,413 INFO L226 Difference]: Without dead ends: 9 [2018-12-30 15:47:59,417 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 15:47:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-30 15:47:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-12-30 15:47:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-30 15:47:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-12-30 15:47:59,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-12-30 15:47:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 15:47:59,449 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-12-30 15:47:59,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 15:47:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-12-30 15:47:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-30 15:47:59,450 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 15:47:59,450 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-30 15:47:59,450 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 15:47:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 15:47:59,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1396608660, now seen corresponding path program 1 times [2018-12-30 15:47:59,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 15:47:59,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 15:47:59,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 15:47:59,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 15:47:59,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 15:47:59,461 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 15:47:59,461 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 15:47:59,461 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 15:47:59,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 15:47:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 15:47:59,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 15:47:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 15:47:59,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-30 15:47:59,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-12-30 15:47:59,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-30 15:47:59,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-30 15:47:59,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-30 15:47:59,606 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-12-30 15:47:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 15:47:59,668 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-12-30 15:47:59,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-30 15:47:59,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-12-30 15:47:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 15:47:59,669 INFO L225 Difference]: With dead ends: 14 [2018-12-30 15:47:59,669 INFO L226 Difference]: Without dead ends: 10 [2018-12-30 15:47:59,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-30 15:47:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-12-30 15:47:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-12-30 15:47:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-30 15:47:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-12-30 15:47:59,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-12-30 15:47:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 15:47:59,673 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-12-30 15:47:59,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-30 15:47:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-12-30 15:47:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-30 15:47:59,674 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 15:47:59,674 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2018-12-30 15:47:59,675 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 15:47:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 15:47:59,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2057893618, now seen corresponding path program 2 times [2018-12-30 15:47:59,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 15:47:59,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 15:47:59,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 15:47:59,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 15:47:59,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 15:47:59,687 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-30 15:47:59,687 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-30 15:47:59,687 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-30 15:47:59,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-30 15:48:10,506 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-30 15:48:10,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-30 15:48:10,525 INFO L285 seRefinementStrategy]: Strategy CamelRefinementStrategy was unsuccessful and could not determine trace feasibility. [2018-12-30 15:48:10,525 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-30 15:48:10,543 WARN L228 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-12-30 15:48:10,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.12 03:48:10 BoogieIcfgContainer [2018-12-30 15:48:10,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-30 15:48:10,544 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-30 15:48:10,544 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-30 15:48:10,544 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-30 15:48:10,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 03:47:58" (3/4) ... [2018-12-30 15:48:10,549 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-30 15:48:10,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-30 15:48:10,550 INFO L168 Benchmark]: Toolchain (without parser) took 12245.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -98.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-30 15:48:10,552 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 15:48:10,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.61 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-30 15:48:10,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.79 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 15:48:10,554 INFO L168 Benchmark]: Boogie Preprocessor took 18.13 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 15:48:10,554 INFO L168 Benchmark]: RCFGBuilder took 287.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-30 15:48:10,555 INFO L168 Benchmark]: TraceAbstraction took 11600.62 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. [2018-12-30 15:48:10,556 INFO L168 Benchmark]: Witness Printer took 4.86 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. [2018-12-30 15:48:10,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.61 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 30.79 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.13 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 287.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11600.62 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.86 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: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] i=0 [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND FALSE !(i<=n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. UNKNOWN Result, 11.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 2 SDslu, 15 SDs, 0 SdLazy, 18 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 10.8s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 8 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...