./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-lit/gcnr2008_false-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-lit/gcnr2008_false-unreach-call_false-termination.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 153d29cc59a928b964d34eac87caede5c68a6fb0 ........................................................................................................................................................................................................................................................... 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 0.1.24-0ed9222-m [2019-01-14 17:38:06,467 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 17:38:06,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 17:38:06,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 17:38:06,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 17:38:06,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 17:38:06,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 17:38:06,487 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 17:38:06,489 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 17:38:06,490 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 17:38:06,490 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 17:38:06,491 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 17:38:06,492 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 17:38:06,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 17:38:06,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 17:38:06,494 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 17:38:06,495 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 17:38:06,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 17:38:06,499 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 17:38:06,500 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 17:38:06,502 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 17:38:06,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 17:38:06,505 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 17:38:06,505 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 17:38:06,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 17:38:06,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 17:38:06,508 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 17:38:06,508 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 17:38:06,509 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 17:38:06,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 17:38:06,511 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 17:38:06,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 17:38:06,512 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 17:38:06,512 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 17:38:06,513 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 17:38:06,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 17:38:06,514 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 17:38:06,528 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 17:38:06,529 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 17:38:06,530 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 17:38:06,530 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 17:38:06,530 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 17:38:06,530 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 17:38:06,530 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 17:38:06,532 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 17:38:06,532 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 17:38:06,532 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 17:38:06,532 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 17:38:06,532 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 17:38:06,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 17:38:06,533 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 17:38:06,533 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 17:38:06,533 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 17:38:06,533 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 17:38:06,533 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 17:38:06,534 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 17:38:06,535 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 17:38:06,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:38:06,536 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 17:38:06,536 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 17:38:06,536 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 17:38:06,536 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 17:38:06,536 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 17:38:06,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 17:38:06,537 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 -> 153d29cc59a928b964d34eac87caede5c68a6fb0 [2019-01-14 17:38:06,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 17:38:06,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 17:38:06,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 17:38:06,611 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 17:38:06,612 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 17:38:06,612 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/gcnr2008_false-unreach-call_false-termination.i [2019-01-14 17:38:06,670 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4741f60c/d0c039f964864b37b692538e7c0f19d5/FLAG355b57040 [2019-01-14 17:38:07,048 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 17:38:07,049 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/gcnr2008_false-unreach-call_false-termination.i [2019-01-14 17:38:07,055 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4741f60c/d0c039f964864b37b692538e7c0f19d5/FLAG355b57040 [2019-01-14 17:38:07,447 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4741f60c/d0c039f964864b37b692538e7c0f19d5 [2019-01-14 17:38:07,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 17:38:07,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 17:38:07,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 17:38:07,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 17:38:07,458 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 17:38:07,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b552cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07, skipping insertion in model container [2019-01-14 17:38:07,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 17:38:07,488 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 17:38:07,678 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:38:07,683 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 17:38:07,715 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:38:07,730 INFO L195 MainTranslator]: Completed translation [2019-01-14 17:38:07,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07 WrapperNode [2019-01-14 17:38:07,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 17:38:07,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 17:38:07,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 17:38:07,732 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 17:38:07,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 17:38:07,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 17:38:07,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 17:38:07,774 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 17:38:07,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... [2019-01-14 17:38:07,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 17:38:07,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 17:38:07,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 17:38:07,805 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 17:38:07,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:38:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 17:38:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 17:38:08,239 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 17:38:08,241 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-14 17:38:08,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:38:08 BoogieIcfgContainer [2019-01-14 17:38:08,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 17:38:08,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 17:38:08,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 17:38:08,252 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 17:38:08,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 05:38:07" (1/3) ... [2019-01-14 17:38:08,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7655e362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:38:08, skipping insertion in model container [2019-01-14 17:38:08,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:38:07" (2/3) ... [2019-01-14 17:38:08,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7655e362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:38:08, skipping insertion in model container [2019-01-14 17:38:08,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:38:08" (3/3) ... [2019-01-14 17:38:08,259 INFO L112 eAbstractionObserver]: Analyzing ICFG gcnr2008_false-unreach-call_false-termination.i [2019-01-14 17:38:08,267 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 17:38:08,278 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 17:38:08,295 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 17:38:08,325 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 17:38:08,326 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 17:38:08,326 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 17:38:08,326 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 17:38:08,326 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 17:38:08,326 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 17:38:08,327 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 17:38:08,327 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 17:38:08,327 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 17:38:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-01-14 17:38:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 17:38:08,348 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:38:08,349 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 17:38:08,351 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:38:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:38:08,357 INFO L82 PathProgramCache]: Analyzing trace with hash 30662980, now seen corresponding path program 1 times [2019-01-14 17:38:08,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:38:08,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:38:08,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:38:08,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:38:08,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:38:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:38:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:38:08,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:38:08,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 17:38:08,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 17:38:08,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 17:38:08,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 17:38:08,473 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-01-14 17:38:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:38:08,489 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-01-14 17:38:08,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 17:38:08,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-01-14 17:38:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:38:08,502 INFO L225 Difference]: With dead ends: 24 [2019-01-14 17:38:08,502 INFO L226 Difference]: Without dead ends: 12 [2019-01-14 17:38:08,505 INFO L631 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 [2019-01-14 17:38:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-01-14 17:38:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-01-14 17:38:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-01-14 17:38:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-01-14 17:38:08,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 5 [2019-01-14 17:38:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:38:08,536 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-01-14 17:38:08,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 17:38:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2019-01-14 17:38:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 17:38:08,537 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:38:08,537 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 17:38:08,539 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:38:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:38:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash 921979909, now seen corresponding path program 1 times [2019-01-14 17:38:08,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:38:08,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:38:08,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:38:08,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:38:08,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:38:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 17:38:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 17:38:08,596 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 17:38:08,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 05:38:08 BoogieIcfgContainer [2019-01-14 17:38:08,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 17:38:08,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 17:38:08,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 17:38:08,617 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 17:38:08,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:38:08" (3/4) ... [2019-01-14 17:38:08,620 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 17:38:08,658 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 17:38:08,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 17:38:08,659 INFO L168 Benchmark]: Toolchain (without parser) took 1208.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:38:08,661 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:38:08,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.40 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 17:38:08,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.05 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:38:08,663 INFO L168 Benchmark]: Boogie Preprocessor took 30.84 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:38:08,663 INFO L168 Benchmark]: RCFGBuilder took 437.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-01-14 17:38:08,664 INFO L168 Benchmark]: TraceAbstraction took 372.82 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: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2019-01-14 17:38:08,665 INFO L168 Benchmark]: Witness Printer took 41.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:38:08,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.40 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 42.05 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.84 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 437.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 372.82 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: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * Witness Printer took 41.70 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: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int x,y,z,w; [L12] EXPR w = 0 [L12] EXPR z = w = 0 [L12] EXPR y = z = w = 0 [L12] x = y = z = w = 0 [L13] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 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=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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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...