./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/count_up_down_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loops/count_up_down_false-unreach-call_true-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 d5465abd0acd0e19d367a95bacffc8ac4a6f2d65 ................................................................................................................................................................................................................................... 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 0.1.24-91b1670 [2018-11-28 18:16:35,491 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:16:35,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:16:35,513 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:16:35,514 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:16:35,517 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:16:35,519 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:16:35,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:16:35,524 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:16:35,525 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:16:35,526 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:16:35,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:16:35,527 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:16:35,529 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:16:35,530 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:16:35,531 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:16:35,531 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:16:35,534 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:16:35,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:16:35,538 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:16:35,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:16:35,541 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:16:35,543 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:16:35,544 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:16:35,544 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:16:35,545 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:16:35,546 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:16:35,547 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:16:35,548 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:16:35,549 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:16:35,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:16:35,551 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:16:35,551 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:16:35,551 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:16:35,552 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:16:35,553 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:16:35,553 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:16:35,578 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:16:35,578 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:16:35,579 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:16:35,579 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:16:35,582 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:16:35,583 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:16:35,583 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:16:35,583 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:16:35,583 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:16:35,583 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:16:35,584 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:16:35,584 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:16:35,584 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:16:35,584 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:16:35,584 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:16:35,584 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:16:35,586 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:16:35,586 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:16:35,586 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:16:35,586 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:16:35,586 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:16:35,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:16:35,587 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:16:35,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:16:35,587 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:16:35,587 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:16:35,588 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:16:35,588 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:16:35,588 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:16:35,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:16:35,588 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 -> d5465abd0acd0e19d367a95bacffc8ac4a6f2d65 [2018-11-28 18:16:35,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:16:35,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:16:35,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:16:35,663 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:16:35,663 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:16:35,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/count_up_down_false-unreach-call_true-termination.i [2018-11-28 18:16:35,719 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3824f96/2ce9ae3beb184236ad73b162cc217f62/FLAG061521b70 [2018-11-28 18:16:36,169 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:16:36,170 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/count_up_down_false-unreach-call_true-termination.i [2018-11-28 18:16:36,175 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3824f96/2ce9ae3beb184236ad73b162cc217f62/FLAG061521b70 [2018-11-28 18:16:36,538 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3824f96/2ce9ae3beb184236ad73b162cc217f62 [2018-11-28 18:16:36,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:16:36,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:16:36,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:16:36,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:16:36,550 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:16:36,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e78fa9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36, skipping insertion in model container [2018-11-28 18:16:36,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:16:36,581 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:16:36,773 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:16:36,778 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:16:36,804 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:16:36,824 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:16:36,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36 WrapperNode [2018-11-28 18:16:36,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:16:36,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:16:36,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:16:36,826 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:16:36,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:16:36,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:16:36,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:16:36,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:16:36,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... [2018-11-28 18:16:36,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:16:36,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:16:36,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:16:36,877 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:16:36,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:16:37,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:16:37,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:16:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:16:37,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:16:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:16:37,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:16:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:16:37,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:16:37,196 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:16:37,196 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:16:37,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:16:37 BoogieIcfgContainer [2018-11-28 18:16:37,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:16:37,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:16:37,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:16:37,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:16:37,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:16:36" (1/3) ... [2018-11-28 18:16:37,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370bc795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:16:37, skipping insertion in model container [2018-11-28 18:16:37,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:36" (2/3) ... [2018-11-28 18:16:37,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370bc795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:16:37, skipping insertion in model container [2018-11-28 18:16:37,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:16:37" (3/3) ... [2018-11-28 18:16:37,204 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_false-unreach-call_true-termination.i [2018-11-28 18:16:37,214 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:16:37,220 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:16:37,234 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:16:37,266 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:16:37,266 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:16:37,267 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:16:37,267 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:16:37,267 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:16:37,267 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:16:37,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:16:37,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:16:37,268 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:16:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-28 18:16:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:16:37,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:37,302 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:37,304 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:37,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-11-28 18:16:37,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:37,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:37,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:37,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:37,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:16:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:16:37,429 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:16:37,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:16:37 BoogieIcfgContainer [2018-11-28 18:16:37,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:16:37,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:16:37,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:16:37,452 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:16:37,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:16:37" (3/4) ... [2018-11-28 18:16:37,455 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:16:37,495 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:16:37,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:16:37,497 INFO L168 Benchmark]: Toolchain (without parser) took 954.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -130.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:16:37,498 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:16:37,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.37 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:16:37,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.72 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:16:37,500 INFO L168 Benchmark]: Boogie Preprocessor took 25.69 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:16:37,501 INFO L168 Benchmark]: RCFGBuilder took 320.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:16:37,502 INFO L168 Benchmark]: TraceAbstraction took 253.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:16:37,503 INFO L168 Benchmark]: Witness Printer took 44.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:16:37,508 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 280.37 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.72 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.69 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 320.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 253.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. * Witness Printer took 44.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. 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: [L13] unsigned int n = __VERIFIER_nondet_uint(); [L14] unsigned int x=n, y=0; VAL [n=0, x=0, y=0] [L15] COND FALSE !(x>0) VAL [n=0, x=0, y=0] [L20] CALL __VERIFIER_assert(y!=n) 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, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...