./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test29_false-unreach-call_true-termination.c --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/test29_false-unreach-call_true-termination.c -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 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 .................................................................................................................................................................................................................................................................... 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 04:23:21,045 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:23:21,047 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:23:21,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:23:21,065 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:23:21,066 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:23:21,069 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:23:21,072 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:23:21,075 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:23:21,076 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:23:21,079 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:23:21,079 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:23:21,081 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:23:21,082 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:23:21,090 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:23:21,091 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:23:21,092 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:23:21,095 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:23:21,101 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:23:21,102 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:23:21,103 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:23:21,106 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:23:21,109 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:23:21,111 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:23:21,111 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:23:21,112 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:23:21,112 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:23:21,115 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:23:21,115 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:23:21,117 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:23:21,117 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:23:21,117 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:23:21,118 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:23:21,118 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:23:21,119 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:23:21,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:23:21,120 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:23:21,146 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:23:21,146 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:23:21,151 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:23:21,151 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:23:21,151 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:23:21,153 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:23:21,153 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:23:21,153 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:23:21,153 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:23:21,153 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:23:21,153 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:23:21,154 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:23:21,154 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:23:21,154 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:23:21,154 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:23:21,154 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:23:21,154 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:23:21,155 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:23:21,156 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:23:21,156 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:23:21,156 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:23:21,156 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:23:21,157 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:23:21,157 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:23:21,157 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:23:21,157 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:23:21,158 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:23:21,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:23:21,158 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 -> 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 [2018-12-31 04:23:21,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:23:21,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:23:21,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:23:21,219 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:23:21,219 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:23:21,220 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-12-31 04:23:21,288 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd6f87a8/5f8c0732b5f743519985cc24fb330ecd/FLAGc32140fc6 [2018-12-31 04:23:21,751 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:23:21,753 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-12-31 04:23:21,760 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd6f87a8/5f8c0732b5f743519985cc24fb330ecd/FLAGc32140fc6 [2018-12-31 04:23:22,104 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd6f87a8/5f8c0732b5f743519985cc24fb330ecd [2018-12-31 04:23:22,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:23:22,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:23:22,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:23:22,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:23:22,114 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:23:22,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e268da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22, skipping insertion in model container [2018-12-31 04:23:22,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:23:22,144 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:23:22,335 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:23:22,351 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:23:22,378 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:23:22,401 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:23:22,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22 WrapperNode [2018-12-31 04:23:22,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:23:22,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:23:22,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:23:22,405 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:23:22,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:23:22,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:23:22,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:23:22,453 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:23:22,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (1/1) ... [2018-12-31 04:23:22,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:23:22,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:23:22,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:23:22,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:23:22,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (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 04:23:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:23:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:23:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:23:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:23:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:23:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:23:22,944 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:23:22,944 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 04:23:22,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:22 BoogieIcfgContainer [2018-12-31 04:23:22,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:23:22,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:23:22,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:23:22,958 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:23:22,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:23:22" (1/3) ... [2018-12-31 04:23:22,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ca886c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:23:22, skipping insertion in model container [2018-12-31 04:23:22,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:22" (2/3) ... [2018-12-31 04:23:22,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ca886c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:23:22, skipping insertion in model container [2018-12-31 04:23:22,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:22" (3/3) ... [2018-12-31 04:23:22,964 INFO L112 eAbstractionObserver]: Analyzing ICFG test29_false-unreach-call_true-termination.c [2018-12-31 04:23:22,976 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:23:22,989 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:23:23,010 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:23:23,066 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:23:23,067 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:23:23,067 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:23:23,067 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:23:23,068 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:23:23,068 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:23:23,068 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:23:23,068 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:23:23,068 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:23:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-31 04:23:23,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 04:23:23,092 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:23:23,093 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:23:23,095 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:23:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:23:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2018-12-31 04:23:23,106 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:23:23,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:23:23,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:23,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:23:23,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:23:23,406 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 04:23:23,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:23:23,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-31 04:23:23,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 04:23:23,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 04:23:23,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-31 04:23:23,431 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 6 states. [2018-12-31 04:23:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:23:23,689 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2018-12-31 04:23:23,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 04:23:23,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-12-31 04:23:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:23:23,702 INFO L225 Difference]: With dead ends: 25 [2018-12-31 04:23:23,702 INFO L226 Difference]: Without dead ends: 10 [2018-12-31 04:23:23,706 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-12-31 04:23:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-12-31 04:23:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-12-31 04:23:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-31 04:23:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2018-12-31 04:23:23,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2018-12-31 04:23:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:23:23,744 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2018-12-31 04:23:23,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 04:23:23,744 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2018-12-31 04:23:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 04:23:23,744 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:23:23,745 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:23:23,745 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:23:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:23:23,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2018-12-31 04:23:23,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:23:23,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:23:23,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:23,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:23:23,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:23:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:23:23,812 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:23:23,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:23:23 BoogieIcfgContainer [2018-12-31 04:23:23,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:23:23,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:23:23,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:23:23,841 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:23:23,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:22" (3/4) ... [2018-12-31 04:23:23,844 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:23:23,894 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:23:23,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:23:23,895 INFO L168 Benchmark]: Toolchain (without parser) took 1787.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -118.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:23,897 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:23:23,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:23,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.42 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:23:23,899 INFO L168 Benchmark]: Boogie Preprocessor took 28.68 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:23,900 INFO L168 Benchmark]: RCFGBuilder took 463.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:23,901 INFO L168 Benchmark]: TraceAbstraction took 893.39 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:23,902 INFO L168 Benchmark]: Witness Printer took 53.33 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 04:23:23,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 48.42 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.68 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 463.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 893.39 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * Witness Printer took 53.33 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: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] EXPR n ? &d1 : &d2 [L15] union dummy *pd = n ? &d1 : &d2; [L16] d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] pd->b = 0 [L22] pd == &d2 && d1.a != 0 [L22] EXPR d1.a [L22] pd == &d2 && d1.a != 0 [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 18 SDslu, 12 SDs, 0 SdLazy, 35 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 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...