./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loops/terminator_01_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loops/terminator_01_false-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9fb65547f8a6daa297fc4bc1126a09cbd517dc4 ............................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-21 12:24:45,260 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-21 12:24:45,262 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-21 12:24:45,275 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-21 12:24:45,275 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-21 12:24:45,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-21 12:24:45,278 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-21 12:24:45,280 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-21 12:24:45,282 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-21 12:24:45,282 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-21 12:24:45,283 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-21 12:24:45,284 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-21 12:24:45,285 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-21 12:24:45,286 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-21 12:24:45,287 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-21 12:24:45,288 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-21 12:24:45,289 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-21 12:24:45,291 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-21 12:24:45,293 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-21 12:24:45,295 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-21 12:24:45,296 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-21 12:24:45,297 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-21 12:24:45,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-21 12:24:45,301 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-21 12:24:45,301 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-21 12:24:45,302 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-21 12:24:45,304 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-21 12:24:45,304 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-21 12:24:45,305 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-21 12:24:45,307 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-21 12:24:45,307 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-21 12:24:45,308 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-21 12:24:45,308 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-21 12:24:45,308 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-21 12:24:45,310 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-21 12:24:45,310 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-21 12:24:45,311 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-21 12:24:45,333 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-21 12:24:45,333 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-21 12:24:45,334 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-21 12:24:45,334 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-21 12:24:45,334 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-21 12:24:45,334 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-21 12:24:45,338 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-21 12:24:45,338 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-21 12:24:45,338 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-21 12:24:45,338 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-21 12:24:45,338 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-21 12:24:45,339 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-21 12:24:45,339 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-21 12:24:45,340 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-21 12:24:45,340 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-21 12:24:45,340 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-21 12:24:45,340 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-21 12:24:45,340 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-21 12:24:45,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-21 12:24:45,344 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-21 12:24:45,344 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-21 12:24:45,344 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-21 12:24:45,344 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-21 12:24:45,344 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-21 12:24:45,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-21 12:24:45,345 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-21 12:24:45,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:24:45,345 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-21 12:24:45,345 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-21 12:24:45,346 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-21 12:24:45,348 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-21 12:24:45,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-21 12:24:45,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-21 12:24:45,349 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-21 12:24:45,349 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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 -> Taipan 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 -> e9fb65547f8a6daa297fc4bc1126a09cbd517dc4 [2018-10-21 12:24:45,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-21 12:24:45,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-21 12:24:45,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-21 12:24:45,442 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-21 12:24:45,443 INFO L276 PluginConnector]: CDTParser initialized [2018-10-21 12:24:45,445 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/terminator_01_false-unreach-call_true-termination.i [2018-10-21 12:24:45,508 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/982514b24/d31d7a4091c04315986bc91a9646feb5/FLAGdd9431d55 [2018-10-21 12:24:45,908 INFO L298 CDTParser]: Found 1 translation units. [2018-10-21 12:24:45,909 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01_false-unreach-call_true-termination.i [2018-10-21 12:24:45,915 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/982514b24/d31d7a4091c04315986bc91a9646feb5/FLAGdd9431d55 [2018-10-21 12:24:45,929 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/982514b24/d31d7a4091c04315986bc91a9646feb5 [2018-10-21 12:24:45,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-21 12:24:45,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-21 12:24:45,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-21 12:24:45,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-21 12:24:45,943 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-21 12:24:45,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:24:45" (1/1) ... [2018-10-21 12:24:45,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b175864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:45, skipping insertion in model container [2018-10-21 12:24:45,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:24:45" (1/1) ... [2018-10-21 12:24:45,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-21 12:24:45,978 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-21 12:24:46,214 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:24:46,229 INFO L189 MainTranslator]: Completed pre-run [2018-10-21 12:24:46,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:24:46,271 INFO L193 MainTranslator]: Completed translation [2018-10-21 12:24:46,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46 WrapperNode [2018-10-21 12:24:46,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-21 12:24:46,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-21 12:24:46,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-21 12:24:46,273 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-21 12:24:46,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-21 12:24:46,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-21 12:24:46,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-21 12:24:46,318 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-21 12:24:46,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... [2018-10-21 12:24:46,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-21 12:24:46,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-21 12:24:46,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-21 12:24:46,359 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-21 12:24:46,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-21 12:24:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-21 12:24:46,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-21 12:24:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-21 12:24:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-21 12:24:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-21 12:24:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-21 12:24:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-21 12:24:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-21 12:24:46,874 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-21 12:24:46,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:24:46 BoogieIcfgContainer [2018-10-21 12:24:46,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-21 12:24:46,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-21 12:24:46,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-21 12:24:46,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-21 12:24:46,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 12:24:45" (1/3) ... [2018-10-21 12:24:46,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234e0275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:24:46, skipping insertion in model container [2018-10-21 12:24:46,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:46" (2/3) ... [2018-10-21 12:24:46,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234e0275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:24:46, skipping insertion in model container [2018-10-21 12:24:46,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:24:46" (3/3) ... [2018-10-21 12:24:46,888 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_01_false-unreach-call_true-termination.i [2018-10-21 12:24:46,896 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-21 12:24:46,905 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-21 12:24:46,923 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-21 12:24:46,957 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-21 12:24:46,958 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-21 12:24:46,958 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-21 12:24:46,958 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-21 12:24:46,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-21 12:24:46,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-21 12:24:46,959 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-21 12:24:46,959 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-21 12:24:46,959 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-21 12:24:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-21 12:24:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-21 12:24:46,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:24:46,984 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:24:46,988 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:24:46,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:24:46,998 INFO L82 PathProgramCache]: Analyzing trace with hash 269929347, now seen corresponding path program 1 times [2018-10-21 12:24:47,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:24:47,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:47,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:24:47,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:47,053 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:24:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:24:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:24:47,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:24:47,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-21 12:24:47,151 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:24:47,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-21 12:24:47,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-21 12:24:47,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-21 12:24:47,176 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-10-21 12:24:47,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:24:47,200 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-10-21 12:24:47,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-21 12:24:47,202 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-21 12:24:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:24:47,210 INFO L225 Difference]: With dead ends: 33 [2018-10-21 12:24:47,211 INFO L226 Difference]: Without dead ends: 14 [2018-10-21 12:24:47,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-21 12:24:47,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-21 12:24:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-21 12:24:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-21 12:24:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-21 12:24:47,262 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-21 12:24:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:24:47,263 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-21 12:24:47,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-21 12:24:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-21 12:24:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-21 12:24:47,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:24:47,264 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:24:47,265 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:24:47,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:24:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1525520925, now seen corresponding path program 1 times [2018-10-21 12:24:47,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:24:47,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:47,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:24:47,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:47,267 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:24:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-21 12:24:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-21 12:24:47,359 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-21 12:24:47,378 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,379 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,380 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,380 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,381 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,382 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,382 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,383 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 12:24:47 BoogieIcfgContainer [2018-10-21 12:24:47,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-21 12:24:47,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-21 12:24:47,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-21 12:24:47,402 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-21 12:24:47,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:24:46" (3/4) ... [2018-10-21 12:24:47,408 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-21 12:24:47,410 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,410 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,410 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,412 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,412 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,416 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,417 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,417 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-21 12:24:47,480 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-21 12:24:47,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-21 12:24:47,482 INFO L168 Benchmark]: Toolchain (without parser) took 1545.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -121.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:47,484 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:24:47,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.00 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:47,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.24 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:24:47,490 INFO L168 Benchmark]: Boogie Preprocessor took 40.01 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:47,491 INFO L168 Benchmark]: RCFGBuilder took 516.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:47,493 INFO L168 Benchmark]: TraceAbstraction took 523.50 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: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:47,494 INFO L168 Benchmark]: Witness Printer took 79.01 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:47,504 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.00 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 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 45.24 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.01 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 516.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 523.50 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: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. * Witness Printer took 79.01 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] CALL int x=__VERIFIER_nondet_int(); [L13] RET int x=__VERIFIER_nondet_int(); [L13] CALL int x=__VERIFIER_nondet_int(); [L13] RET int x=__VERIFIER_nondet_int(); [L14] int *p = &x; [L16] CALL, EXPR \read(x) [L16] RET, EXPR \read(x) [L16] COND FALSE !(x<100) [L19] CALL __VERIFIER_assert(0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...