./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/joey.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_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/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_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/joey.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/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_c1bc470c-c696-44ae-af06-a98bf7e7ea18/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 6360f720317c1229a4bb277806239106bfb4e5c0 ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:25:04,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:04,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:04,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:04,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:04,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:04,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:04,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:04,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:04,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:04,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:04,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:04,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:04,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:04,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:04,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:04,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:04,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:04,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:04,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:04,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:04,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:04,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:04,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:04,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:04,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:04,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:04,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:04,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:04,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:04,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:04,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:04,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:04,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:04,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:04,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:04,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:04,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:04,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:04,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:04,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:04,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:25:04,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:04,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:04,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:04,881 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:04,881 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:04,881 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:04,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:04,882 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:04,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:04,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:04,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:04,890 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:04,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:04,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:04,891 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:04,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:04,892 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:25:04,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:04,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:04,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:04,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:04,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:04,893 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:25:04,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:04,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:04,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:04,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:04,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:04,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:04,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:04,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:04,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:04,897 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:04,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:04,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:04,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:04,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:04,898 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_c1bc470c-c696-44ae-af06-a98bf7e7ea18/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6360f720317c1229a4bb277806239106bfb4e5c0 [2021-10-11 02:25:05,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:05,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:05,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:05,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:05,232 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:05,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/joey.c [2021-10-11 02:25:05,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/data/e23247f7e/b6477f4a528c47eba3d4675faafc2daf/FLAG671076762 [2021-10-11 02:25:05,769 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:05,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/sv-benchmarks/c/termination-crafted-lit/joey.c [2021-10-11 02:25:05,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/data/e23247f7e/b6477f4a528c47eba3d4675faafc2daf/FLAG671076762 [2021-10-11 02:25:06,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/data/e23247f7e/b6477f4a528c47eba3d4675faafc2daf [2021-10-11 02:25:06,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:06,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:06,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:06,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:06,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:06,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e62421d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06, skipping insertion in model container [2021-10-11 02:25:06,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:06,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:06,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:06,346 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:06,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:06,372 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:06,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06 WrapperNode [2021-10-11 02:25:06,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:06,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:06,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:06,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:06,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:06,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:06,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:06,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:06,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... [2021-10-11 02:25:06,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:06,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:06,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:06,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:06,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/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 02:25:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-10-11 02:25:06,525 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-10-11 02:25:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:06,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:06,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:06,771 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:25:06,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:06 BoogieIcfgContainer [2021-10-11 02:25:06,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:06,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:06,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:06,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:06,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:06" (1/3) ... [2021-10-11 02:25:06,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efa55e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:06, skipping insertion in model container [2021-10-11 02:25:06,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:06" (2/3) ... [2021-10-11 02:25:06,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efa55e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:06, skipping insertion in model container [2021-10-11 02:25:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:06" (3/3) ... [2021-10-11 02:25:06,784 INFO L111 eAbstractionObserver]: Analyzing ICFG joey.c [2021-10-11 02:25:06,800 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:06,804 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:25:06,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:25:06,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:06,848 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:06,848 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:06,848 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:06,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:06,849 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:06,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:06,849 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-10-11 02:25:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:25:06,875 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:06,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:25:06,877 INFO L429 AbstractCegarLoop]: === Iteration 1 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:06,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828178, now seen corresponding path program 1 times [2021-10-11 02:25:06,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:06,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238547534] [2021-10-11 02:25:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:07,295 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 02:25:07,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238547534] [2021-10-11 02:25:07,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:07,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:25:07,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609350313] [2021-10-11 02:25:07,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:25:07,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:07,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:25:07,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:07,351 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2021-10-11 02:25:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:07,625 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-10-11 02:25:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:25:07,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2021-10-11 02:25:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:07,639 INFO L225 Difference]: With dead ends: 64 [2021-10-11 02:25:07,639 INFO L226 Difference]: Without dead ends: 52 [2021-10-11 02:25:07,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:25:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-11 02:25:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-10-11 02:25:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 02:25:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-10-11 02:25:07,702 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 6 [2021-10-11 02:25:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:07,703 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-10-11 02:25:07,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:25:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2021-10-11 02:25:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:25:07,704 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:07,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:25:07,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:07,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:25:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:07,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828402, now seen corresponding path program 1 times [2021-10-11 02:25:07,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:07,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11082451] [2021-10-11 02:25:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:25:07,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:25:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:25:07,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:25:07,747 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:25:07,748 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:25:07,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:07,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:07 BoogieIcfgContainer [2021-10-11 02:25:07,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:07,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:07,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:07,773 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:07,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:06" (3/4) ... [2021-10-11 02:25:07,776 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:25:07,814 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1bc470c-c696-44ae-af06-a98bf7e7ea18/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:07,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:07,817 INFO L168 Benchmark]: Toolchain (without parser) took 1695.26 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 52.3 MB in the beginning and 62.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:07,818 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:07,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.70 ms. Allocated memory is still 88.1 MB. Free memory was 52.1 MB in the beginning and 66.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:07,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 88.1 MB. Free memory was 66.7 MB in the beginning and 65.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:07,820 INFO L168 Benchmark]: Boogie Preprocessor took 25.02 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.7 MB in the end (delta: 819.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:07,821 INFO L168 Benchmark]: RCFGBuilder took 336.38 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 52.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:07,822 INFO L168 Benchmark]: TraceAbstraction took 996.41 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 51.8 MB in the beginning and 64.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:07,823 INFO L168 Benchmark]: Witness Printer took 42.16 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 62.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:07,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.70 ms. Allocated memory is still 88.1 MB. Free memory was 52.1 MB in the beginning and 66.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 88.1 MB. Free memory was 66.7 MB in the beginning and 65.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.02 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.7 MB in the end (delta: 819.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 336.38 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 52.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 996.41 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 51.8 MB in the beginning and 64.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 42.16 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 62.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y; [L22] CALL rec(x) VAL [\old(x)=2147483647] [L10] COND FALSE !(x <= 0) VAL [\old(x)=2147483647, x=2147483647] [L12] COND FALSE !(x%2 == 0) VAL [\old(x)=2147483647, x=2147483647] [L15] ++x VAL [\old(x)=2147483647, x=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 43 SDslu, 67 SDs, 0 SdLazy, 68 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, 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, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! Received shutdown request...