./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test22_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/ldv-regression/test22_false-unreach-call.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 54c9c3f123e280a35d761deadfd537de0a28f053 ................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 15:49:04,933 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:49:04,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:49:04,946 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:49:04,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:49:04,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:49:04,950 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:49:04,952 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:49:04,954 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:49:04,955 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:49:04,956 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:49:04,956 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:49:04,957 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:49:04,959 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:49:04,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:49:04,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:49:04,962 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:49:04,964 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:49:04,966 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:49:04,968 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:49:04,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:49:04,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:49:04,974 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:49:04,974 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:49:04,975 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:49:04,976 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:49:04,977 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:49:04,978 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:49:04,979 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:49:04,980 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:49:04,980 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:49:04,981 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:49:04,981 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:49:04,982 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:49:04,983 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:49:04,984 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:49:04,984 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:49:05,000 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:49:05,000 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:49:05,001 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:49:05,002 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:49:05,002 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:49:05,002 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:49:05,002 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:49:05,002 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:49:05,002 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:49:05,003 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:49:05,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:49:05,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:49:05,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:49:05,004 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:49:05,005 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:49:05,005 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:49:05,005 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:49:05,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:49:05,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:49:05,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:49:05,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:49:05,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:49:05,007 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:49:05,007 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:49:05,008 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:49:05,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:49:05,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:49:05,008 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 -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2019-01-14 15:49:05,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:49:05,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:49:05,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:49:05,094 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:49:05,094 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:49:05,095 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test22_false-unreach-call.c [2019-01-14 15:49:05,164 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26029020/6c6c34d1ec234ebd98433e927977686d/FLAG829995a35 [2019-01-14 15:49:05,600 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:49:05,601 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test22_false-unreach-call.c [2019-01-14 15:49:05,607 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26029020/6c6c34d1ec234ebd98433e927977686d/FLAG829995a35 [2019-01-14 15:49:05,961 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26029020/6c6c34d1ec234ebd98433e927977686d [2019-01-14 15:49:05,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:49:05,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:49:05,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:49:05,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:49:05,973 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:49:05,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:49:05" (1/1) ... [2019-01-14 15:49:05,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e1c2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:05, skipping insertion in model container [2019-01-14 15:49:05,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:49:05" (1/1) ... [2019-01-14 15:49:05,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:49:06,011 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:49:06,279 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:49:06,301 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:49:06,325 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:49:06,353 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:49:06,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06 WrapperNode [2019-01-14 15:49:06,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:49:06,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:49:06,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:49:06,356 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:49:06,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:49:06,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:49:06,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:49:06,406 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:49:06,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... [2019-01-14 15:49:06,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:49:06,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:49:06,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:49:06,499 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:49:06,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:49:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-01-14 15:49:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 15:49:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 15:49:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:49:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:49:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 15:49:07,004 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:49:07,005 INFO L286 CfgBuilder]: Removed 15 assue(true) statements. [2019-01-14 15:49:07,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:49:07 BoogieIcfgContainer [2019-01-14 15:49:07,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:49:07,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:49:07,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:49:07,011 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:49:07,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:49:05" (1/3) ... [2019-01-14 15:49:07,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbbf868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:49:07, skipping insertion in model container [2019-01-14 15:49:07,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:49:06" (2/3) ... [2019-01-14 15:49:07,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbbf868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:49:07, skipping insertion in model container [2019-01-14 15:49:07,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:49:07" (3/3) ... [2019-01-14 15:49:07,015 INFO L112 eAbstractionObserver]: Analyzing ICFG test22_false-unreach-call.c [2019-01-14 15:49:07,026 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:49:07,033 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:49:07,048 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:49:07,079 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:49:07,080 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:49:07,080 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:49:07,080 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:49:07,080 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:49:07,080 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:49:07,080 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:49:07,081 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:49:07,081 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:49:07,096 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-01-14 15:49:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 15:49:07,103 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:49:07,104 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:49:07,107 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:49:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:49:07,113 INFO L82 PathProgramCache]: Analyzing trace with hash 164664103, now seen corresponding path program 1 times [2019-01-14 15:49:07,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:49:07,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:49:07,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:49:07,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:49:07,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:49:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:49:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:49:07,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:49:07,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 15:49:07,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 15:49:07,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 15:49:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 15:49:07,343 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-01-14 15:49:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:49:07,358 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-01-14 15:49:07,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 15:49:07,359 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-01-14 15:49:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:49:07,370 INFO L225 Difference]: With dead ends: 34 [2019-01-14 15:49:07,370 INFO L226 Difference]: Without dead ends: 21 [2019-01-14 15:49:07,374 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 15:49:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-14 15:49:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-01-14 15:49:07,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-01-14 15:49:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-01-14 15:49:07,408 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2019-01-14 15:49:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:49:07,409 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-01-14 15:49:07,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 15:49:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-01-14 15:49:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-14 15:49:07,410 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:49:07,410 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:49:07,410 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:49:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:49:07,411 INFO L82 PathProgramCache]: Analyzing trace with hash 603612068, now seen corresponding path program 1 times [2019-01-14 15:49:07,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:49:07,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:49:07,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:49:07,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:49:07,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:49:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:49:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:49:07,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:49:07,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-01-14 15:49:07,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-01-14 15:49:07,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-01-14 15:49:07,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-01-14 15:49:07,999 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 10 states. [2019-01-14 15:49:08,317 WARN L181 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2019-01-14 15:49:08,694 WARN L181 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2019-01-14 15:49:09,019 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2019-01-14 15:49:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:49:09,066 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2019-01-14 15:49:09,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-14 15:49:09,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-01-14 15:49:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:49:09,070 INFO L225 Difference]: With dead ends: 71 [2019-01-14 15:49:09,070 INFO L226 Difference]: Without dead ends: 66 [2019-01-14 15:49:09,072 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-01-14 15:49:09,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-01-14 15:49:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 33. [2019-01-14 15:49:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-01-14 15:49:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-01-14 15:49:09,085 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-01-14 15:49:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:49:09,085 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-01-14 15:49:09,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-01-14 15:49:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-01-14 15:49:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-14 15:49:09,088 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:49:09,088 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:49:09,088 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:49:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:49:09,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1304676646, now seen corresponding path program 1 times [2019-01-14 15:49:09,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:49:09,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:49:09,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:49:09,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:49:09,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:49:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:49:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:49:09,239 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 15:49:09,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:49:09 BoogieIcfgContainer [2019-01-14 15:49:09,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:49:09,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:49:09,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:49:09,284 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:49:09,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:49:07" (3/4) ... [2019-01-14 15:49:09,286 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 15:49:09,344 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:49:09,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:49:09,345 INFO L168 Benchmark]: Toolchain (without parser) took 3379.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 954.0 MB in the beginning and 1.0 GB in the end (delta: -65.0 MB). Peak memory consumption was 72.3 MB. Max. memory is 11.5 GB. [2019-01-14 15:49:09,347 INFO L168 Benchmark]: CDTParser took 0.93 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. [2019-01-14 15:49:09,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.11 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 942.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-01-14 15:49:09,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.63 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. [2019-01-14 15:49:09,350 INFO L168 Benchmark]: Boogie Preprocessor took 92.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -202.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2019-01-14 15:49:09,351 INFO L168 Benchmark]: RCFGBuilder took 507.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-01-14 15:49:09,352 INFO L168 Benchmark]: TraceAbstraction took 2275.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. [2019-01-14 15:49:09,353 INFO L168 Benchmark]: Witness Printer took 61.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:49:09,358 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 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 385.11 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 942.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.63 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. * Boogie Preprocessor took 92.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -202.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 507.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2275.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. * Witness Printer took 61.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [d1={-2:0}, d2={-1:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={-2:0}, d2={-1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={-2:0}, d2={-1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={-2:0}, d2={-1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [d1={-2:0}, d2={-1:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [d1={-2:0}, d2={-1:0}] [L38] COND FALSE !(i < *pa) [L27] EXPR s1->a [L27] return s1->a == i; [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={-2:0}, d2={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. UNSAFE Result, 2.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 59 SDslu, 139 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...