./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test21_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test21_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36029c97ff36b924dec4fff6e18b89b3177e9048 .................................................................................................................................................................................................................................................................................................................. 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 0.1.23-1dbac8b [2018-10-26 20:36:53,827 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:36:53,828 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:36:53,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:36:53,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:36:53,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:36:53,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:36:53,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:36:53,846 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:36:53,846 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:36:53,847 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:36:53,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:36:53,848 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:36:53,852 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:36:53,853 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:36:53,854 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:36:53,854 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:36:53,855 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:36:53,864 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:36:53,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:36:53,869 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:36:53,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:36:53,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:36:53,880 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:36:53,880 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:36:53,881 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:36:53,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:36:53,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:36:53,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:36:53,883 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:36:53,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:36:53,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:36:53,886 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:36:53,886 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:36:53,887 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:36:53,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:36:53,888 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:36:53,902 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:36:53,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:36:53,904 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:36:53,905 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:36:53,905 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:36:53,905 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:36:53,905 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:36:53,906 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:36:53,906 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:36:53,906 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:36:53,906 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:36:53,907 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:36:53,909 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:36:53,909 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:36:53,909 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:36:53,909 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:36:53,909 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:36:53,909 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:36:53,909 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:36:53,910 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:36:53,910 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:36:53,910 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:36:53,910 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:36:53,910 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:36:53,910 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:36:53,910 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:36:53,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:36:53,911 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:36:53,911 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:36:53,911 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:36:53,911 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:36:53,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:36:53,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:36:53,911 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:36:53,912 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan 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 -> Taipan 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 -> 36029c97ff36b924dec4fff6e18b89b3177e9048 [2018-10-26 20:36:53,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:36:53,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:36:53,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:36:53,970 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:36:53,970 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:36:53,970 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test21_false-unreach-call_true-termination.c [2018-10-26 20:36:54,023 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/data/9ed897b72/9dbaca8ff3944de792d6b59d74196d49/FLAG22e7543ec [2018-10-26 20:36:54,391 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:36:54,391 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/sv-benchmarks/c/ldv-regression/test21_false-unreach-call_true-termination.c [2018-10-26 20:36:54,397 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/data/9ed897b72/9dbaca8ff3944de792d6b59d74196d49/FLAG22e7543ec [2018-10-26 20:36:54,408 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/data/9ed897b72/9dbaca8ff3944de792d6b59d74196d49 [2018-10-26 20:36:54,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:36:54,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:36:54,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:36:54,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:36:54,417 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:36:54,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8c40cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54, skipping insertion in model container [2018-10-26 20:36:54,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:36:54,447 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:36:54,563 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:36:54,571 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:36:54,584 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:36:54,598 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:36:54,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54 WrapperNode [2018-10-26 20:36:54,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:36:54,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:36:54,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:36:54,600 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:36:54,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:36:54,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:36:54,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:36:54,633 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:36:54,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... [2018-10-26 20:36:54,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:36:54,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:36:54,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:36:54,654 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:36:54,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/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 [2018-10-26 20:36:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-10-26 20:36:54,768 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-10-26 20:36:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:36:54,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:36:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-10-26 20:36:54,768 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-10-26 20:36:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:36:54,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:36:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:36:54,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:36:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-10-26 20:36:54,769 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-10-26 20:36:55,195 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:36:55,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:55 BoogieIcfgContainer [2018-10-26 20:36:55,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:36:55,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:36:55,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:36:55,199 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:36:55,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:36:54" (1/3) ... [2018-10-26 20:36:55,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2591c44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:55, skipping insertion in model container [2018-10-26 20:36:55,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:54" (2/3) ... [2018-10-26 20:36:55,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2591c44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:55, skipping insertion in model container [2018-10-26 20:36:55,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:55" (3/3) ... [2018-10-26 20:36:55,204 INFO L112 eAbstractionObserver]: Analyzing ICFG test21_false-unreach-call_true-termination.c [2018-10-26 20:36:55,219 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:36:55,230 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:36:55,246 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:36:55,284 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:36:55,284 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:36:55,284 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:36:55,284 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:36:55,284 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:36:55,284 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:36:55,284 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:36:55,285 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:36:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-26 20:36:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 20:36:55,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:36:55,314 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:36:55,316 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:36:55,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:36:55,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1416783409, now seen corresponding path program 1 times [2018-10-26 20:36:55,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:36:55,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:36:55,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:36:55,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:36:55,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:36:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:36:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:36:55,570 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:36:55,591 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,592 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,592 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,592 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:36:55 BoogieIcfgContainer [2018-10-26 20:36:55,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:36:55,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:36:55,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:36:55,622 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:36:55,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:55" (3/4) ... [2018-10-26 20:36:55,624 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 20:36:55,626 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,626 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,627 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,627 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:36:55,668 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_298c9450-84a5-4cd7-b747-b6ad098a33f3/bin-2019/utaipan/witness.graphml [2018-10-26 20:36:55,669 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:36:55,669 INFO L168 Benchmark]: Toolchain (without parser) took 1258.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 955.8 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 509.0 kB. Max. memory is 11.5 GB. [2018-10-26 20:36:55,671 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:36:55,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.52 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:55,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.66 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:55,672 INFO L168 Benchmark]: Boogie Preprocessor took 20.87 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:36:55,672 INFO L168 Benchmark]: RCFGBuilder took 542.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -246.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:55,673 INFO L168 Benchmark]: TraceAbstraction took 424.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:55,673 INFO L168 Benchmark]: Witness Printer took 47.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:36:55,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.52 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 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 32.66 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.87 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 542.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -246.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 424.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Witness Printer took 47.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] CALL struct dummy d1, d2; [L9] RET struct dummy d1, d2; [L9] RET struct dummy d1, d2; [L9] RET struct dummy d1, d2; [L9] RET struct dummy d1, d2; [L9] RET struct dummy d1, d2; [L9] RET struct dummy d1, d2; [L32] CALL init() VAL [d1={12:0}, d2={10:0}] [L13] CALL d1.a = __VERIFIER_nondet_int() [L13] RET d1.a = __VERIFIER_nondet_int() [L14] CALL d1.b = __VERIFIER_nondet_int() [L14] RET d1.b = __VERIFIER_nondet_int() [L16] CALL d2.a = __VERIFIER_nondet_int() [L16] RET d2.a = __VERIFIER_nondet_int() [L17] CALL d2.b = __VERIFIER_nondet_int() [L17] RET d2.b = __VERIFIER_nondet_int() [L32] init() VAL [d1={12:0}, d2={10:0}] [L33] CALL, EXPR get_dummy() VAL [d1={12:0}, d2={10:0}] [L22] COND TRUE, EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={12:0}, d1={12:0}, d2={10:0}] [L22] RET return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] EXPR get_dummy() VAL [d1={12:0}, d2={10:0}, get_dummy()={12:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={12:0}, d2={10:0}] [L22] COND TRUE, EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={12:0}, d1={12:0}, d2={10:0}] [L22] RET return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] EXPR get_dummy() VAL [d1={12:0}, d2={10:0}, get_dummy()={12:0}, pd1={12:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L34] COND TRUE pd1 != 0 && pd1 == pd2 VAL [d1={12:0}, d2={10:0}, pd1={12:0}, pd2={12:0}] [L35] CALL, EXPR check(pd1, pd2) VAL [d1={12:0}, d2={10:0}] [L27] CALL, EXPR s1->a [L27] RET, EXPR s1->a [L27] CALL, EXPR s2->b [L27] RET, EXPR s2->b [L27] RET return s1->a == s2->b; [L35] EXPR check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={12:0}, d2={10:0}, pd1={12:0}, pd2={12:0}] [L35] COND TRUE !check(pd1, pd2) [L42] __VERIFIER_error() VAL [d1={12:0}, d2={10:0}, pd1={12:0}, pd2={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 29 NumberOfCodeBlocks, 29 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...