./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.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_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/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_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/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_7ec6da89-27fb-4dc0-983b-b161b29ea755/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 5c710c9332055b5f06164a07be44be6850b8917f ........................................................................................................................................................................................................................................ 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 02:20:17,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:17,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:17,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:17,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:17,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:17,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:17,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:17,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:17,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:17,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:17,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:17,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:17,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:17,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:17,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:17,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:17,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:17,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:17,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:17,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:17,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:17,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:17,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:17,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:17,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:17,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:17,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:17,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:17,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:17,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:17,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:17,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:17,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:17,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:17,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:17,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:17,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:17,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:17,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:17,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:17,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:20:17,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:17,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:17,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:17,718 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:17,718 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:17,719 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:17,719 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:17,719 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:17,720 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:17,720 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:17,720 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:17,721 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:17,721 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:17,721 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:17,722 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:17,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:17,723 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:20:17,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:17,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:17,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:17,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:17,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:17,725 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:20:17,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:17,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:17,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:17,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:17,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:17,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:17,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:17,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:17,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:17,728 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:17,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:17,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:17,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:17,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:17,730 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_7ec6da89-27fb-4dc0-983b-b161b29ea755/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c710c9332055b5f06164a07be44be6850b8917f [2021-10-11 02:20:17,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:18,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:18,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:18,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:18,018 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:18,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c [2021-10-11 02:20:18,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/data/9110549b9/26a1dae65c13466bb232deb2281a9774/FLAG4f235a580 [2021-10-11 02:20:18,608 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:18,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c [2021-10-11 02:20:18,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/data/9110549b9/26a1dae65c13466bb232deb2281a9774/FLAG4f235a580 [2021-10-11 02:20:18,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/data/9110549b9/26a1dae65c13466bb232deb2281a9774 [2021-10-11 02:20:18,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:18,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:18,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:18,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:18,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:18,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:18" (1/1) ... [2021-10-11 02:20:19,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:18, skipping insertion in model container [2021-10-11 02:20:19,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:18" (1/1) ... [2021-10-11 02:20:19,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:19,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:19,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:19,204 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:19,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:19,273 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:19,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19 WrapperNode [2021-10-11 02:20:19,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:19,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:19,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:19,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:19,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:19,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:19,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:19,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:19,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:19,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:19,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:19,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:19,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/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 02:20:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-10-11 02:20:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-10-11 02:20:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:19,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:19,790 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:20:19,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:19 BoogieIcfgContainer [2021-10-11 02:20:19,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:19,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:19,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:19,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:19,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:18" (1/3) ... [2021-10-11 02:20:19,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3456cd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:19, skipping insertion in model container [2021-10-11 02:20:19,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (2/3) ... [2021-10-11 02:20:19,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3456cd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:19, skipping insertion in model container [2021-10-11 02:20:19,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:19" (3/3) ... [2021-10-11 02:20:19,815 INFO L111 eAbstractionObserver]: Analyzing ICFG RecursiveNonterminating-2.c [2021-10-11 02:20:19,848 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:19,852 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:20:19,865 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:20:19,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:19,895 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:19,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:19,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:19,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:19,896 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:19,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:19,896 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-10-11 02:20:19,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:20:19,921 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:19,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:20:19,923 INFO L429 AbstractCegarLoop]: === Iteration 1 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:20:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:19,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1666, now seen corresponding path program 1 times [2021-10-11 02:20:19,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:19,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496657803] [2021-10-11 02:20:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:20,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:20,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:20,096 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:20:20,097 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:20:20,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:20,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:20 BoogieIcfgContainer [2021-10-11 02:20:20,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:20,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:20,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:20,115 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:20,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:19" (3/4) ... [2021-10-11 02:20:20,120 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:20:20,168 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ec6da89-27fb-4dc0-983b-b161b29ea755/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:20,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:20,177 INFO L168 Benchmark]: Toolchain (without parser) took 1189.31 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 69.0 MB in the beginning and 81.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,179 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:20,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.06 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 68.9 MB in the beginning and 106.4 MB in the end (delta: -37.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.20 ms. Allocated memory is still 127.9 MB. Free memory was 106.4 MB in the beginning and 105.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:20,184 INFO L168 Benchmark]: Boogie Preprocessor took 18.10 ms. Allocated memory is still 127.9 MB. Free memory was 105.2 MB in the beginning and 104.4 MB in the end (delta: 752.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:20,187 INFO L168 Benchmark]: RCFGBuilder took 467.94 ms. Allocated memory is still 127.9 MB. Free memory was 104.4 MB in the beginning and 93.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,189 INFO L168 Benchmark]: TraceAbstraction took 318.70 ms. Allocated memory is still 127.9 MB. Free memory was 93.2 MB in the beginning and 82.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,190 INFO L168 Benchmark]: Witness Printer took 60.02 ms. Allocated memory is still 127.9 MB. Free memory was 82.7 MB in the beginning and 81.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.06 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 68.9 MB in the beginning and 106.4 MB in the end (delta: -37.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.20 ms. Allocated memory is still 127.9 MB. Free memory was 106.4 MB in the beginning and 105.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.10 ms. Allocated memory is still 127.9 MB. Free memory was 105.2 MB in the beginning and 104.4 MB in the end (delta: 752.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 467.94 ms. Allocated memory is still 127.9 MB. Free memory was 104.4 MB in the beginning and 93.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 318.70 ms. Allocated memory is still 127.9 MB. Free memory was 93.2 MB in the beginning and 82.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.02 ms. Allocated memory is still 127.9 MB. Free memory was 82.7 MB in the beginning and 81.0 MB in the end (delta: 1.7 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: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L17] int n = __VERIFIER_nondet_int(); [L18] n + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...