./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Addition02WithOverflowBug.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition02WithOverflowBug.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta --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 32bit --witnessprinter.graph.data.programhash 4dc17171ab7e1d3edd86dad6d65587aa7dd0f9060f526fa057c22f6fe741258c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:01,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:01,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:01,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:01,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:01,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:01,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:01,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:01,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:01,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:01,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:01,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:01,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:01,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:01,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:01,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:01,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:01,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:01,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:01,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:01,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:01,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:01,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:01,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:01,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:01,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:01,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:01,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:01,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:01,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:01,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:01,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:01,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:01,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:01,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:01,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:01,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:01,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:01,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:01,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:01,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:01,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-10-17 17:23:01,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:01,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:01,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:01,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:01,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:01,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:01,158 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:01,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:01,159 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:01,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:23:01,159 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:01,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:01,160 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:23:01,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:23:01,161 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:01,161 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:23:01,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:23:01,161 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:23:01,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:01,163 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:01,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:23:01,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:01,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:01,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:01,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:01,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:01,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:01,165 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 17:23:01,165 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:01,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:01,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:01,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:01,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:01,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:01,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:01,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:01,168 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:23:01,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:01,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:01,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:23:01,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:23:01,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:01,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:01,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc17171ab7e1d3edd86dad6d65587aa7dd0f9060f526fa057c22f6fe741258c [2022-10-17 17:23:01,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:01,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:01,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:01,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:01,493 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:01,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/recursive/Addition02WithOverflowBug.c [2022-10-17 17:23:01,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/data/fed54bf6f/a64f364e03924a9a847e3b85678cf7ee/FLAG149c3051f [2022-10-17 17:23:01,948 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:01,949 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/sv-benchmarks/c/recursive/Addition02WithOverflowBug.c [2022-10-17 17:23:01,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/data/fed54bf6f/a64f364e03924a9a847e3b85678cf7ee/FLAG149c3051f [2022-10-17 17:23:02,355 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/data/fed54bf6f/a64f364e03924a9a847e3b85678cf7ee [2022-10-17 17:23:02,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:02,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:02,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:02,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:02,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:02,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c9b13fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02, skipping insertion in model container [2022-10-17 17:23:02,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:02,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:02,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/sv-benchmarks/c/recursive/Addition02WithOverflowBug.c[809,822] [2022-10-17 17:23:02,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:02,678 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:02,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/sv-benchmarks/c/recursive/Addition02WithOverflowBug.c[809,822] [2022-10-17 17:23:02,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:02,710 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:02,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02 WrapperNode [2022-10-17 17:23:02,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:02,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:02,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:02,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:02,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,744 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2022-10-17 17:23:02,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:02,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:02,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:02,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:02,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,763 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:02,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:02,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:02,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:02,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (1/1) ... [2022-10-17 17:23:02,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:02,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:02,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:23:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2022-10-17 17:23:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2022-10-17 17:23:02,932 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:02,934 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:03,151 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:03,177 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:03,178 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:23:03,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:03 BoogieIcfgContainer [2022-10-17 17:23:03,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:03,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:03,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:03,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:03,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:02" (1/3) ... [2022-10-17 17:23:03,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bf5df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:03, skipping insertion in model container [2022-10-17 17:23:03,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:02" (2/3) ... [2022-10-17 17:23:03,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bf5df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:03, skipping insertion in model container [2022-10-17 17:23:03,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:03" (3/3) ... [2022-10-17 17:23:03,190 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition02WithOverflowBug.c [2022-10-17 17:23:03,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:03,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-17 17:23:03,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:03,302 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40b2afae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:03,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-17 17:23:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:23:03,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:23:03,315 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:03,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:23:03,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-17 17:23:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1668808128, now seen corresponding path program 1 times [2022-10-17 17:23:03,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:03,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791286076] [2022-10-17 17:23:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:23:03,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:23:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:23:03,532 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:23:03,534 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:23:03,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-10-17 17:23:03,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-10-17 17:23:03,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-10-17 17:23:03,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-10-17 17:23:03,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-10-17 17:23:03,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-10-17 17:23:03,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-10-17 17:23:03,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-10-17 17:23:03,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-10-17 17:23:03,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-10-17 17:23:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:03,553 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 17:23:03,560 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:23:03,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:23:03 BoogieIcfgContainer [2022-10-17 17:23:03,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:23:03,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:23:03,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:23:03,601 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:23:03,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:03" (3/4) ... [2022-10-17 17:23:03,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:23:03,658 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:23:03,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:23:03,666 INFO L158 Benchmark]: Toolchain (without parser) took 1298.02ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 57.0MB in the beginning and 121.9MB in the end (delta: -64.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:03,667 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:03,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.82ms. Allocated memory is still 96.5MB. Free memory was 56.8MB in the beginning and 67.1MB in the end (delta: -10.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:23:03,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.97ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 65.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:23:03,670 INFO L158 Benchmark]: Boogie Preprocessor took 20.80ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 64.6MB in the end (delta: 978.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:03,671 INFO L158 Benchmark]: RCFGBuilder took 413.33ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 52.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 17:23:03,671 INFO L158 Benchmark]: TraceAbstraction took 414.77ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 52.3MB in the beginning and 123.0MB in the end (delta: -70.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:03,671 INFO L158 Benchmark]: Witness Printer took 57.78ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 121.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:23:03,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.82ms. Allocated memory is still 96.5MB. Free memory was 56.8MB in the beginning and 67.1MB in the end (delta: -10.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.97ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 65.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.80ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 64.6MB in the end (delta: 978.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 413.33ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 52.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 414.77ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 52.3MB in the beginning and 123.0MB in the end (delta: -70.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.78ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 121.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] int n = __VERIFIER_nondet_int(); [L31] CALL addition(m,n) VAL [\old(m)=2147483647, \old(n)=1] [L16] COND FALSE !(n == 0) VAL [\old(m)=2147483647, \old(n)=1, m=2147483647, n=1] [L19] COND TRUE n > 0 VAL [\old(m)=2147483647, \old(n)=1, m=2147483647, n=1] [L20] m+1 VAL [\old(m)=2147483647, \old(n)=1, m=2147483647, n=1] - UnprovableResult [Line: 32]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 32]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 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, 6 NumberOfCodeBlocks, 6 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! [2022-10-17 17:23:03,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6450c092-5544-4201-9358-b41fb61a00a1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)