./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TerminatorRec02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/TerminatorRec02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8c9656c5ef8dceb7982043d8db455c38d2f23147 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:02,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:02,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:02,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:02,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:02,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:02,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:02,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:02,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:02,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:02,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:02,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:02,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:02,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:02,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:02,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:02,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:02,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:02,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:02,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:02,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:02,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:02,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:02,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:02,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:02,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:02,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:02,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:02,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:02,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:02,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:02,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:02,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:02,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:02,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:02,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:02,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:02,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:02,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:02,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:02,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:02,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:28:02,253 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:02,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:02,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:02,255 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:02,256 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:02,256 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:02,256 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:02,256 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:02,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:02,257 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:02,258 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:02,258 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:02,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:02,259 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:02,259 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:02,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:02,260 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:02,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:02,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:02,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:02,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:02,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:02,262 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:28:02,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:02,262 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:02,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:02,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:02,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:02,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:02,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:02,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:02,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:02,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:02,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:02,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:02,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:02,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:02,267 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9656c5ef8dceb7982043d8db455c38d2f23147 [2021-10-11 02:28:02,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:02,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:02,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:02,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:02,603 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:02,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2021-10-11 02:28:02,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/data/473e862b5/83c08c3363224682be19ee42621feda7/FLAGf22972e01 [2021-10-11 02:28:03,105 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:03,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2021-10-11 02:28:03,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/data/473e862b5/83c08c3363224682be19ee42621feda7/FLAGf22972e01 [2021-10-11 02:28:03,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/data/473e862b5/83c08c3363224682be19ee42621feda7 [2021-10-11 02:28:03,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:03,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:03,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:03,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:03,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:03,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b08be43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03, skipping insertion in model container [2021-10-11 02:28:03,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:03,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:03,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:03,783 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:03,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:03,818 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:03,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03 WrapperNode [2021-10-11 02:28:03,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:03,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:03,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:03,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:03,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:03,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:03,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:03,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:03,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... [2021-10-11 02:28:03,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:03,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:03,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:03,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:03,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:03,993 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2021-10-11 02:28:03,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2021-10-11 02:28:03,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:03,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:04,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:04,259 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:28:04,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:04 BoogieIcfgContainer [2021-10-11 02:28:04,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:04,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:04,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:04,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:04,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:03" (1/3) ... [2021-10-11 02:28:04,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd96d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:04, skipping insertion in model container [2021-10-11 02:28:04,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:03" (2/3) ... [2021-10-11 02:28:04,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd96d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:04, skipping insertion in model container [2021-10-11 02:28:04,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:04" (3/3) ... [2021-10-11 02:28:04,271 INFO L111 eAbstractionObserver]: Analyzing ICFG TerminatorRec02.c [2021-10-11 02:28:04,289 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:04,293 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:28:04,305 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:28:04,342 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:04,342 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:04,343 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:04,343 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:04,343 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:04,343 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:04,343 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:04,343 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-10-11 02:28:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:28:04,366 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:04,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:04,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:04,374 INFO L82 PathProgramCache]: Analyzing trace with hash 306322899, now seen corresponding path program 1 times [2021-10-11 02:28:04,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:04,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928453442] [2021-10-11 02:28:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:04,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928453442] [2021-10-11 02:28:04,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:04,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:04,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146694382] [2021-10-11 02:28:04,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:04,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:04,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:04,676 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2021-10-11 02:28:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:04,864 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-11 02:28:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:04,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-10-11 02:28:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:04,876 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:28:04,876 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:28:04,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:28:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:28:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:28:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-11 02:28:04,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-11 02:28:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:04,922 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-11 02:28:04,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-11 02:28:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:04,923 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:04,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:04,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:04,924 INFO L429 AbstractCegarLoop]: === Iteration 2 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 906075314, now seen corresponding path program 1 times [2021-10-11 02:28:04,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:04,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547070432] [2021-10-11 02:28:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:04,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547070432] [2021-10-11 02:28:04,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:05,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:05,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595490182] [2021-10-11 02:28:05,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:05,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:05,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:05,008 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2021-10-11 02:28:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:05,032 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-11 02:28:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:05,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:28:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:05,036 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:28:05,036 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:28:05,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:28:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-11 02:28:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:28:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-11 02:28:05,049 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2021-10-11 02:28:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:05,050 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-11 02:28:05,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-11 02:28:05,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:28:05,052 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:05,053 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:05,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:05,054 INFO L429 AbstractCegarLoop]: === Iteration 3 === [factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:05,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1137733808, now seen corresponding path program 1 times [2021-10-11 02:28:05,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:05,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703232757] [2021-10-11 02:28:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:05,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:05,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631152878] [2021-10-11 02:28:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75855639-6845-44a9-99b9-3c2a8f8d4de9/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:05,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:28:05,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:05,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:05,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703232757] [2021-10-11 02:28:05,525 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:05,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631152878] [2021-10-11 02:28:05,526 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: cannot handle proper monomial [2021-10-11 02:28:05,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1160704902] [2021-10-11 02:28:05,546 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-11 02:28:05,547 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:05,552 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:28:05,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:05,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-11 02:28:05,555 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-10-11 02:28:05,555 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:05,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:28:05,803 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-10-11 02:28:05,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:05 BoogieIcfgContainer [2021-10-11 02:28:05,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:05,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:05,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:05,804 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:05,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:04" (3/4) ... [2021-10-11 02:28:05,808 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:28:05,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:05,810 INFO L168 Benchmark]: Toolchain (without parser) took 2295.28 ms. Allocated memory is still 134.2 MB. Free memory was 101.5 MB in the beginning and 78.2 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:05,811 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 40.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:05,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.09 ms. Allocated memory is still 134.2 MB. Free memory was 101.3 MB in the beginning and 111.4 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:05,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 134.2 MB. Free memory was 111.4 MB in the beginning and 110.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:05,813 INFO L168 Benchmark]: Boogie Preprocessor took 26.44 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 109.3 MB in the end (delta: 960.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:05,814 INFO L168 Benchmark]: RCFGBuilder took 377.66 ms. Allocated memory is still 134.2 MB. Free memory was 109.3 MB in the beginning and 98.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:05,815 INFO L168 Benchmark]: TraceAbstraction took 1539.54 ms. Allocated memory is still 134.2 MB. Free memory was 98.4 MB in the beginning and 78.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:05,816 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 134.2 MB. Free memory is still 78.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:05,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 40.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.09 ms. Allocated memory is still 134.2 MB. Free memory was 101.3 MB in the beginning and 111.4 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 134.2 MB. Free memory was 111.4 MB in the beginning and 110.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.44 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 109.3 MB in the end (delta: 960.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 377.66 ms. Allocated memory is still 134.2 MB. Free memory was 109.3 MB in the beginning and 98.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1539.54 ms. Allocated memory is still 134.2 MB. Free memory was 98.4 MB in the beginning and 78.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.49 ms. Allocated memory is still 134.2 MB. Free memory is still 78.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L26] int x = __VERIFIER_nondet_int(); [L27] COND FALSE !(x < 0) [L29] int y = __VERIFIER_nondet_int(); [L30] COND FALSE !(y < 0) [L32] int z = __VERIFIER_nondet_int(); [L33] CALL fact(x) [L18] COND TRUE x > 1 [L19] EXPR x - 1 [L19] CALL, EXPR fact(x - 1) [L18] COND TRUE x > 1 [L19] EXPR x - 1 [L19] CALL, EXPR fact(x - 1) [L18] COND FALSE !(x > 1) [L22] return 1; [L19] RET, EXPR fact(x - 1) [L19] int y = fact(x - 1); [L20] y * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 33 SDslu, 20 SDs, 0 SdLazy, 41 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...