./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.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/ldv-regression/test_while_int_true-termination.c_false-unreach-call.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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b ............................................................................................................................................................................................................................................................................................................ 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 0.1.24-2e94e6a [2018-12-31 04:22:34,413 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:22:34,415 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:22:34,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:22:34,427 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:22:34,428 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:22:34,430 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:22:34,432 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:22:34,434 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:22:34,435 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:22:34,436 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:22:34,436 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:22:34,438 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:22:34,439 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:22:34,440 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:22:34,441 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:22:34,442 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:22:34,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:22:34,446 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:22:34,448 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:22:34,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:22:34,451 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:22:34,454 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:22:34,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:22:34,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:22:34,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:22:34,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:22:34,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:22:34,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:22:34,461 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:22:34,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:22:34,462 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:22:34,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:22:34,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:22:34,464 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:22:34,465 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:22:34,465 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:22:34,490 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:22:34,492 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:22:34,493 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:22:34,493 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:22:34,493 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:22:34,494 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:22:34,494 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:22:34,494 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:22:34,494 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:22:34,494 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:22:34,494 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:22:34,499 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:22:34,499 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:22:34,499 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:22:34,499 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:22:34,499 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:22:34,500 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:22:34,500 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:22:34,500 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:22:34,500 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:22:34,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:22:34,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:22:34,503 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:22:34,503 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:22:34,503 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:22:34,504 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:22:34,504 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:22:34,504 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:22:34,504 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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2018-12-31 04:22:34,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:22:34,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:22:34,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:22:34,568 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:22:34,568 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:22:34,569 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-12-31 04:22:34,631 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a447d43/795fba68586d419b9d8effb24376a6dc/FLAG2cdaadd47 [2018-12-31 04:22:35,081 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:22:35,082 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-12-31 04:22:35,087 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a447d43/795fba68586d419b9d8effb24376a6dc/FLAG2cdaadd47 [2018-12-31 04:22:35,465 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a447d43/795fba68586d419b9d8effb24376a6dc [2018-12-31 04:22:35,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:22:35,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:22:35,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:22:35,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:22:35,476 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:22:35,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569723e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35, skipping insertion in model container [2018-12-31 04:22:35,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:22:35,511 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:22:35,678 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:22:35,683 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:22:35,699 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:22:35,717 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:22:35,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35 WrapperNode [2018-12-31 04:22:35,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:22:35,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:22:35,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:22:35,719 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:22:35,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:22:35,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:22:35,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:22:35,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:22:35,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (1/1) ... [2018-12-31 04:22:35,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:22:35,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:22:35,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:22:35,774 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:22:35,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (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 [2018-12-31 04:22:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:22:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:22:36,071 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:22:36,072 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-12-31 04:22:36,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:36 BoogieIcfgContainer [2018-12-31 04:22:36,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:22:36,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:22:36,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:22:36,077 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:22:36,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:22:35" (1/3) ... [2018-12-31 04:22:36,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3239f8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:22:36, skipping insertion in model container [2018-12-31 04:22:36,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:35" (2/3) ... [2018-12-31 04:22:36,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3239f8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:22:36, skipping insertion in model container [2018-12-31 04:22:36,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:36" (3/3) ... [2018-12-31 04:22:36,080 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int_true-termination.c_false-unreach-call.i [2018-12-31 04:22:36,091 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:22:36,099 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:22:36,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:22:36,149 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:22:36,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:22:36,150 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:22:36,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:22:36,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:22:36,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:22:36,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:22:36,151 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:22:36,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:22:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2018-12-31 04:22:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-31 04:22:36,174 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:22:36,175 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-31 04:22:36,177 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:22:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:22:36,184 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2018-12-31 04:22:36,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:22:36,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:22:36,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:36,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:22:36,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:22:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:22:36,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:22:36,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 04:22:36,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:22:36,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:22:36,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:22:36,430 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2018-12-31 04:22:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:22:36,515 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2018-12-31 04:22:36,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:22:36,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-31 04:22:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:22:36,530 INFO L225 Difference]: With dead ends: 24 [2018-12-31 04:22:36,530 INFO L226 Difference]: Without dead ends: 8 [2018-12-31 04:22:36,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:22:36,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-31 04:22:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-12-31 04:22:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-31 04:22:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-31 04:22:36,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-12-31 04:22:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:22:36,570 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-31 04:22:36,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:22:36,570 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-31 04:22:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 04:22:36,571 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:22:36,571 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-12-31 04:22:36,571 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:22:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:22:36,572 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2018-12-31 04:22:36,572 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:22:36,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:22:36,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:36,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:22:36,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:22:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:22:36,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 04:22:36,708 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 04:22:36,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:22:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:22:36,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:22:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:22:36,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 04:22:36,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-12-31 04:22:36,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-31 04:22:36,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-31 04:22:36,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-31 04:22:36,854 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-12-31 04:22:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:22:37,031 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-12-31 04:22:37,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 04:22:37,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-12-31 04:22:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:22:37,032 INFO L225 Difference]: With dead ends: 12 [2018-12-31 04:22:37,032 INFO L226 Difference]: Without dead ends: 10 [2018-12-31 04:22:37,033 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-31 04:22:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-12-31 04:22:37,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-12-31 04:22:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-31 04:22:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-12-31 04:22:37,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-12-31 04:22:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:22:37,037 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-12-31 04:22:37,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-31 04:22:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-12-31 04:22:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-31 04:22:37,037 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:22:37,037 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-12-31 04:22:37,038 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:22:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:22:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2018-12-31 04:22:37,038 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:22:37,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:22:37,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:37,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:22:37,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:22:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:22:37,078 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:22:37,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:22:37 BoogieIcfgContainer [2018-12-31 04:22:37,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:22:37,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:22:37,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:22:37,100 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:22:37,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:36" (3/4) ... [2018-12-31 04:22:37,104 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:22:37,154 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:22:37,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:22:37,156 INFO L168 Benchmark]: Toolchain (without parser) took 1686.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -104.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:37,158 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-12-31 04:22:37,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.13 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:37,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:22:37,161 INFO L168 Benchmark]: Boogie Preprocessor took 17.72 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:22:37,162 INFO L168 Benchmark]: RCFGBuilder took 298.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:37,163 INFO L168 Benchmark]: TraceAbstraction took 1025.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:37,163 INFO L168 Benchmark]: Witness Printer took 55.61 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. [2018-12-31 04:22:37,170 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 246.13 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.72 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 298.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1025.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 55.61 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L24] COND TRUE i<5 [L25] i++ [L18] (b) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 8 SDslu, 20 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 3 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...