./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0 --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 2d1bc4b963494dde679836712102a3d11f4ee907c8b1c996d3c2bcb4b4e82cb1 --- 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-e04fb08 [2022-11-16 16:23:24,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:23:24,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:23:24,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:23:24,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:23:24,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:23:24,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:23:24,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:23:24,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:23:24,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:23:24,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:23:24,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:23:24,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:23:24,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:23:24,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:23:24,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:23:24,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:23:24,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:23:24,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:23:24,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:23:24,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:23:24,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:23:24,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:23:24,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:23:24,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:23:24,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:23:24,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:23:24,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:23:24,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:23:24,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:23:24,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:23:24,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:23:24,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:23:24,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:23:24,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:23:24,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:23:24,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:23:24,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:23:24,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:23:24,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:23:24,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:23:24,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-16 16:23:24,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:23:24,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:23:24,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:23:24,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:23:24,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:23:24,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:23:24,756 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:23:24,756 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:23:24,756 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:23:24,757 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:23:24,757 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:23:24,757 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:23:24,758 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:23:24,758 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:23:24,759 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:23:24,759 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:23:24,759 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:23:24,760 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:23:24,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:23:24,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:23:24,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:23:24,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:23:24,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:23:24,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:23:24,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:23:24,763 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 16:23:24,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:23:24,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:23:24,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:23:24,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:23:24,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:23:24,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:23:24,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:23:24,765 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:23:24,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:23:24,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:23:24,766 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:23:24,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:23:24,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:23:24,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:23:24,768 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_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d1bc4b963494dde679836712102a3d11f4ee907c8b1c996d3c2bcb4b4e82cb1 [2022-11-16 16:23:25,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:23:25,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:23:25,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:23:25,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:23:25,073 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:23:25,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_good.i [2022-11-16 16:23:25,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/data/0e91b35c6/4bc6e35890fb4feeaaa5e3ffd7dd92f3/FLAG4ea4941ed [2022-11-16 16:23:25,888 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:23:25,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_good.i [2022-11-16 16:23:25,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/data/0e91b35c6/4bc6e35890fb4feeaaa5e3ffd7dd92f3/FLAG4ea4941ed [2022-11-16 16:23:26,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/data/0e91b35c6/4bc6e35890fb4feeaaa5e3ffd7dd92f3 [2022-11-16 16:23:26,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:23:26,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:23:26,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:23:26,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:23:26,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:23:26,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:23:26" (1/1) ... [2022-11-16 16:23:26,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3d9f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:26, skipping insertion in model container [2022-11-16 16:23:26,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:23:26" (1/1) ... [2022-11-16 16:23:26,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:23:26,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:23:26,548 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 16:23:27,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:23:27,123 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:23:27,140 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 16:23:27,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:23:27,400 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:23:27,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27 WrapperNode [2022-11-16 16:23:27,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:23:27,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:23:27,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:23:27,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:23:27,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,495 INFO L138 Inliner]: procedures = 504, calls = 167, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 199 [2022-11-16 16:23:27,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:23:27,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:23:27,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:23:27,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:23:27,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:23:27,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:23:27,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:23:27,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:23:27,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (1/1) ... [2022-11-16 16:23:27,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:23:27,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:23:27,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:23:27,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:23:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-16 16:23:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-16 16:23:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-16 16:23:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-16 16:23:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-16 16:23:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:23:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 16:23:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:23:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:23:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:23:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:23:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-16 16:23:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:23:27,860 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:23:27,862 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:23:28,218 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:23:28,273 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:23:28,273 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 16:23:28,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:23:28 BoogieIcfgContainer [2022-11-16 16:23:28,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:23:28,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:23:28,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:23:28,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:23:28,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:23:26" (1/3) ... [2022-11-16 16:23:28,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736c0009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:23:28, skipping insertion in model container [2022-11-16 16:23:28,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:27" (2/3) ... [2022-11-16 16:23:28,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736c0009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:23:28, skipping insertion in model container [2022-11-16 16:23:28,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:23:28" (3/3) ... [2022-11-16 16:23:28,301 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_03_good.i [2022-11-16 16:23:28,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:23:28,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 16:23:28,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:23:28,409 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;@5e42ab4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:23:28,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 16:23:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 46 states have internal predecessors, (48), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 16:23:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 16:23:28,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:23:28,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:23:28,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:23:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:23:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1757519858, now seen corresponding path program 1 times [2022-11-16 16:23:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:23:28,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706413078] [2022-11-16 16:23:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:23:28,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:23:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:23:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:23:28,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:23:28,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706413078] [2022-11-16 16:23:28,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706413078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:23:28,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:23:28,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:23:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879495502] [2022-11-16 16:23:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:23:28,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:23:28,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:23:28,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:23:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:23:28,765 INFO L87 Difference]: Start difference. First operand has 52 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 46 states have internal predecessors, (48), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 16:23:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:23:28,830 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2022-11-16 16:23:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:23:28,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-11-16 16:23:28,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:23:28,849 INFO L225 Difference]: With dead ends: 95 [2022-11-16 16:23:28,849 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 16:23:28,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:23:28,858 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:23:28,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:23:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 16:23:28,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-16 16:23:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 38 states have internal predecessors, (38), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 16:23:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-11-16 16:23:28,914 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 9 [2022-11-16 16:23:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:23:28,915 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-11-16 16:23:28,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 16:23:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-11-16 16:23:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:23:28,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:23:28,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:23:28,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:23:28,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:23:28,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:23:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1354017165, now seen corresponding path program 1 times [2022-11-16 16:23:28,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:23:28,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570323480] [2022-11-16 16:23:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:23:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:23:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:23:29,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:23:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:23:29,100 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:23:29,100 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:23:29,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-16 16:23:29,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-16 16:23:29,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-16 16:23:29,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-16 16:23:29,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-16 16:23:29,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-16 16:23:29,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-16 16:23:29,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-16 16:23:29,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:23:29,121 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 16:23:29,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:23:29,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:23:29 BoogieIcfgContainer [2022-11-16 16:23:29,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:23:29,167 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:23:29,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:23:29,171 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:23:29,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:23:28" (3/4) ... [2022-11-16 16:23:29,176 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 16:23:29,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:23:29,180 INFO L158 Benchmark]: Toolchain (without parser) took 3121.40ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 71.5MB in the beginning and 77.5MB in the end (delta: -6.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-16 16:23:29,182 INFO L158 Benchmark]: CDTParser took 7.30ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 91.3MB in the end (delta: -11.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:23:29,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1343.63ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 71.3MB in the beginning and 101.2MB in the end (delta: -29.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2022-11-16 16:23:29,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.84ms. Allocated memory is still 136.3MB. Free memory was 101.2MB in the beginning and 98.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:23:29,189 INFO L158 Benchmark]: Boogie Preprocessor took 34.25ms. Allocated memory is still 136.3MB. Free memory was 98.3MB in the beginning and 96.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:23:29,189 INFO L158 Benchmark]: RCFGBuilder took 757.62ms. Allocated memory is still 136.3MB. Free memory was 96.2MB in the beginning and 72.5MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 16:23:29,190 INFO L158 Benchmark]: TraceAbstraction took 875.62ms. Allocated memory is still 136.3MB. Free memory was 71.9MB in the beginning and 78.0MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:23:29,190 INFO L158 Benchmark]: Witness Printer took 9.80ms. Allocated memory is still 136.3MB. Free memory was 77.5MB in the beginning and 77.5MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:23:29,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 7.30ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 91.3MB in the end (delta: -11.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1343.63ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 71.3MB in the beginning and 101.2MB in the end (delta: -29.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.84ms. Allocated memory is still 136.3MB. Free memory was 101.2MB in the beginning and 98.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.25ms. Allocated memory is still 136.3MB. Free memory was 98.3MB in the beginning and 96.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 757.62ms. Allocated memory is still 136.3MB. Free memory was 96.2MB in the beginning and 72.5MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 875.62ms. Allocated memory is still 136.3MB. Free memory was 71.9MB in the beginning and 78.0MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 9.80ms. Allocated memory is still 136.3MB. Free memory was 77.5MB in the beginning and 77.5MB in the end (delta: 2.0kB). 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 - UnprovableResult [Line: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1525] int globalTrue = 1; [L1547] char** globalArgv = ((void *)0); [L1526] int globalFalse = 0; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1546] int globalArgc = 0; [L1522] const int GLOBAL_CONST_TRUE = 1; [L1527] int globalFive = 5; [L1664] CALL printLine("Calling good()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={25:0}] [L1414] COND TRUE line != ((void *)0) [L1664] RET printLine("Calling good()...") VAL [\old(argc)=2147483651, argc=2147483651, argv={2147483653:2147483652}, argv={2147483653:2147483652}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1665] CALL CWE191_Integer_Underflow__int_fgets_postdec_03_good() [L1656] CALL goodB2G1() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=2147483649, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND FALSE !(5!=5) VAL [data=2147483649, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] COND TRUE data > (-0x7fffffff - 1) [L1574] data-- VAL [data=2147483649, data--=2147483649, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1606]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1606]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1631]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1631]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1648]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1648]: 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 3 procedures, 52 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 55 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 could not prove your program: unable to determine feasibility of some traces [2022-11-16 16:23:29,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/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 Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc5432a-2a95-41ec-87eb-e050e2ab382a/bin/utaipan-Xvt2sAort0/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample