./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW --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 9f3754bba4a1587368989ac0863ef9d6b3b5395c51f3c9cbd6b355a987b99a6d --- 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-4e7fbc6 [2022-11-23 14:30:15,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:30:15,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:30:15,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:30:15,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:30:15,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:30:15,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:30:15,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:30:15,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:30:15,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:30:15,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:30:15,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:30:15,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:30:15,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:30:15,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:30:15,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:30:15,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:30:15,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:30:15,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:30:15,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:30:15,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:30:15,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:30:15,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:30:15,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:30:15,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:30:15,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:30:15,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:30:15,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:30:15,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:30:15,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:30:15,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:30:15,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:30:15,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:30:15,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:30:15,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:30:16,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:30:16,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:30:16,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:30:16,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:30:16,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:30:16,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:30:16,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 14:30:16,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:30:16,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:30:16,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:30:16,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:30:16,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:30:16,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:30:16,026 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:30:16,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:30:16,027 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:30:16,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:30:16,027 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:30:16,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:30:16,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:30:16,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:30:16,028 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:30:16,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:30:16,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:30:16,029 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:30:16,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:30:16,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:30:16,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:30:16,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:30:16,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:30:16,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:30:16,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:30:16,032 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:30:16,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:30:16,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:30:16,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:30:16,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:30:16,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:30:16,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:30:16,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:30:16,034 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:30:16,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:30:16,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:30:16,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:30:16,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:30:16,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:30:16,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:30:16,035 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_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f3754bba4a1587368989ac0863ef9d6b3b5395c51f3c9cbd6b355a987b99a6d [2022-11-23 14:30:16,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:30:16,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:30:16,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:30:16,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:30:16,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:30:16,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_34_bad.i [2022-11-23 14:30:19,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:30:19,786 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:30:19,786 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_34_bad.i [2022-11-23 14:30:19,813 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data/d344b652e/816a6a3ab84b4287990d7785ff8af2c2/FLAGce20ec34c [2022-11-23 14:30:19,827 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data/d344b652e/816a6a3ab84b4287990d7785ff8af2c2 [2022-11-23 14:30:19,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:30:19,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:30:19,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:30:19,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:30:19,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:30:19,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:19" (1/1) ... [2022-11-23 14:30:19,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108537ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:19, skipping insertion in model container [2022-11-23 14:30:19,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:19" (1/1) ... [2022-11-23 14:30:19,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:30:19,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:30:20,277 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:30:20,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:30:20,766 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:30:20,786 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:30:20,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:30:21,052 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:30:21,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21 WrapperNode [2022-11-23 14:30:21,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:30:21,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:30:21,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:30:21,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:30:21,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,136 INFO L138 Inliner]: procedures = 500, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-11-23 14:30:21,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:30:21,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:30:21,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:30:21,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:30:21,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,174 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:30:21,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:30:21,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:30:21,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:30:21,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (1/1) ... [2022-11-23 14:30:21,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:30:21,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:30:21,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:30:21,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:30:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:30:21,255 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:30:21,255 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:30:21,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:30:21,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:30:21,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:30:21,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:30:21,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:30:21,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:30:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:30:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:30:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:30:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:30:21,412 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:30:21,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:30:21,621 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:30:21,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:30:21,661 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:30:21,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:21 BoogieIcfgContainer [2022-11-23 14:30:21,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:30:21,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:30:21,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:30:21,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:30:21,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:30:19" (1/3) ... [2022-11-23 14:30:21,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f72706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:21, skipping insertion in model container [2022-11-23 14:30:21,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:21" (2/3) ... [2022-11-23 14:30:21,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f72706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:21, skipping insertion in model container [2022-11-23 14:30:21,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:21" (3/3) ... [2022-11-23 14:30:21,672 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_add_34_bad.i [2022-11-23 14:30:21,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:30:21,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:30:21,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:30:21,746 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;@2db9c628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:30:21,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:30:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) [2022-11-23 14:30:21,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:30:21,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:21,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:21,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:30:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:21,764 INFO L85 PathProgramCache]: Analyzing trace with hash -135244463, now seen corresponding path program 1 times [2022-11-23 14:30:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194493722] [2022-11-23 14:30:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:21,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:22,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194493722] [2022-11-23 14:30:22,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194493722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:22,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:22,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:30:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808788638] [2022-11-23 14:30:22,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:22,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:30:22,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:30:22,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:30:22,476 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-23 14:30:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:22,582 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-23 14:30:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:30:22,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 8 [2022-11-23 14:30:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:22,594 INFO L225 Difference]: With dead ends: 15 [2022-11-23 14:30:22,595 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 14:30:22,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:30:22,604 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:22,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:30:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 14:30:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-23 14:30:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:30:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-23 14:30:22,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-11-23 14:30:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:22,650 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-23 14:30:22,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-23 14:30:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-23 14:30:22,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:30:22,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:22,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:22,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:30:22,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:30:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash 102388997, now seen corresponding path program 1 times [2022-11-23 14:30:22,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:22,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142375318] [2022-11-23 14:30:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:22,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:30:22,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:30:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:30:22,766 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:30:22,766 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:30:22,768 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:30:22,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:30:22,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:30:22,775 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:30:22,780 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:30:22,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:30:22 BoogieIcfgContainer [2022-11-23 14:30:22,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:30:22,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:30:22,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:30:22,811 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:30:22,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:21" (3/4) ... [2022-11-23 14:30:22,815 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:30:22,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:30:22,816 INFO L158 Benchmark]: Toolchain (without parser) took 2984.71ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 97.1MB in the beginning and 111.5MB in the end (delta: -14.4MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-11-23 14:30:22,817 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 132.1MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:22,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1220.55ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 97.1MB in the beginning and 112.8MB in the end (delta: -15.7MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2022-11-23 14:30:22,818 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.31ms. Allocated memory is still 165.7MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:30:22,819 INFO L158 Benchmark]: Boogie Preprocessor took 38.81ms. Allocated memory is still 165.7MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:30:22,819 INFO L158 Benchmark]: RCFGBuilder took 485.47ms. Allocated memory is still 165.7MB. Free memory was 108.6MB in the beginning and 94.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:30:22,820 INFO L158 Benchmark]: TraceAbstraction took 1143.94ms. Allocated memory is still 165.7MB. Free memory was 92.9MB in the beginning and 111.5MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:22,820 INFO L158 Benchmark]: Witness Printer took 5.43ms. Allocated memory is still 165.7MB. Free memory is still 111.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:22,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 132.1MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1220.55ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 97.1MB in the beginning and 112.8MB in the end (delta: -15.7MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.31ms. Allocated memory is still 165.7MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.81ms. Allocated memory is still 165.7MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 485.47ms. Allocated memory is still 165.7MB. Free memory was 108.6MB in the beginning and 94.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1143.94ms. Allocated memory is still 165.7MB. Free memory was 92.9MB in the beginning and 111.5MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.43ms. Allocated memory is still 165.7MB. Free memory is still 111.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1581] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1581] RET printLine("Calling bad()...") VAL [#in~argv={2147483653:2147483652}, argc=2147483651, 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, unknown-#in~argc-unknown=2147483651] [L1582] CALL CWE190_Integer_Overflow__int_fgets_add_34_bad() [L1555] int data; [L1556] CWE190_Integer_Overflow__int_fgets_add_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data + 1 VAL [data=2147483647, data=2147483647, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={6:0}] - UnprovableResult [Line: 1573]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 9 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.5s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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 [2022-11-23 14:30:22,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/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 Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW --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 9f3754bba4a1587368989ac0863ef9d6b3b5395c51f3c9cbd6b355a987b99a6d --- 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-4e7fbc6 [2022-11-23 14:30:25,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:30:25,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:30:25,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:30:25,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:30:25,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:30:25,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:30:25,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:30:25,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:30:25,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:30:25,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:30:25,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:30:25,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:30:25,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:30:25,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:30:25,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:30:25,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:30:25,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:30:25,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:30:25,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:30:25,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:30:25,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:30:25,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:30:25,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:30:25,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:30:25,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:30:25,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:30:25,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:30:25,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:30:25,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:30:25,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:30:25,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:30:25,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:30:25,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:30:25,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:30:25,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:30:25,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:30:25,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:30:25,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:30:25,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:30:25,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:30:25,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 14:30:25,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:30:25,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:30:25,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:30:25,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:30:25,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:30:25,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:30:25,597 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:30:25,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:30:25,598 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:30:25,598 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:30:25,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:30:25,599 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:30:25,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:30:25,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:30:25,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:30:25,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:30:25,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:30:25,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:30:25,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:30:25,601 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:30:25,601 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:30:25,602 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:30:25,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:30:25,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:30:25,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:30:25,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:30:25,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:30:25,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:30:25,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:30:25,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:30:25,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:30:25,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:30:25,604 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:30:25,604 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:30:25,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:30:25,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:30:25,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:30:25,605 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f3754bba4a1587368989ac0863ef9d6b3b5395c51f3c9cbd6b355a987b99a6d [2022-11-23 14:30:26,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:30:26,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:30:26,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:30:26,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:30:26,055 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:30:26,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_34_bad.i [2022-11-23 14:30:29,268 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:30:29,677 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:30:29,678 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_34_bad.i [2022-11-23 14:30:29,723 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data/052a5ed39/645a6b84ab744d87868501f547b1b483/FLAG8b2e0acc8 [2022-11-23 14:30:29,744 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/data/052a5ed39/645a6b84ab744d87868501f547b1b483 [2022-11-23 14:30:29,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:30:29,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:30:29,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:30:29,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:30:29,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:30:29,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:29" (1/1) ... [2022-11-23 14:30:29,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfa1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:29, skipping insertion in model container [2022-11-23 14:30:29,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:29" (1/1) ... [2022-11-23 14:30:29,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:30:29,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:30:30,213 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:30:30,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:30:30,713 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:30:30,733 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:30:30,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:30:30,954 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:30:30,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30 WrapperNode [2022-11-23 14:30:30,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:30:30,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:30:30,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:30:30,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:30:30,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:30,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,012 INFO L138 Inliner]: procedures = 505, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-23 14:30:31,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:30:31,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:30:31,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:30:31,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:30:31,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,043 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:30:31,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:30:31,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:30:31,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:30:31,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (1/1) ... [2022-11-23 14:30:31,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:30:31,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:30:31,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:30:31,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:30:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:30:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:30:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:30:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:30:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:30:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:30:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:30:31,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:30:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:30:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:30:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 14:30:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:30:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 14:30:31,352 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:30:31,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:30:31,574 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:30:31,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:30:31,580 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:30:31,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:31 BoogieIcfgContainer [2022-11-23 14:30:31,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:30:31,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:30:31,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:30:31,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:30:31,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:30:29" (1/3) ... [2022-11-23 14:30:31,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89c7dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:31, skipping insertion in model container [2022-11-23 14:30:31,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:30" (2/3) ... [2022-11-23 14:30:31,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89c7dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:31, skipping insertion in model container [2022-11-23 14:30:31,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:31" (3/3) ... [2022-11-23 14:30:31,593 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_add_34_bad.i [2022-11-23 14:30:31,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:30:31,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:30:31,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:30:31,686 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;@648676fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:30:31,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:30:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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) [2022-11-23 14:30:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:30:31,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:31,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:31,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:30:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-23 14:30:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:30:31,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530018940] [2022-11-23 14:30:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:31,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:31,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:30:31,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:30:31,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:30:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:31,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 14:30:31,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:30:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:31,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:30:31,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:30:31,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530018940] [2022-11-23 14:30:31,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530018940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:31,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:31,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:30:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940757442] [2022-11-23 14:30:31,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:31,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:30:31,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:30:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:30:31,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:30:31,989 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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) Second operand has 2 states, 1 states have (on average 9.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-23 14:30:32,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:32,010 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-23 14:30:32,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:30:32,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 9.0) internal successors, (9), 2 states have internal predecessors, (9), 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 11 [2022-11-23 14:30:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:32,021 INFO L225 Difference]: With dead ends: 22 [2022-11-23 14:30:32,021 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 14:30:32,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:30:32,031 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:32,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:30:32,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 14:30:32,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 14:30:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:30:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-23 14:30:32,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2022-11-23 14:30:32,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:32,071 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-23 14:30:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 9.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-23 14:30:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-23 14:30:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:30:32,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:32,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:32,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:32,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:32,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:30:32,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1427713972, now seen corresponding path program 1 times [2022-11-23 14:30:32,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:30:32,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817690707] [2022-11-23 14:30:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:32,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:32,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:30:32,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:30:32,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:30:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:30:32,496 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:30:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:30:32,574 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:30:32,582 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:30:32,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:30:32,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:30:32,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:32,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:32,814 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:30:32,822 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:30:32,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:30:32 BoogieIcfgContainer [2022-11-23 14:30:32,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:30:32,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:30:32,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:30:32,851 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:30:32,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:31" (3/4) ... [2022-11-23 14:30:32,855 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:30:32,855 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:30:32,856 INFO L158 Benchmark]: Toolchain (without parser) took 3100.32ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 35.2MB in the beginning and 51.5MB in the end (delta: -16.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-11-23 14:30:32,857 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 79.7MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:32,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1196.07ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 35.0MB in the beginning and 73.5MB in the end (delta: -38.6MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-23 14:30:32,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.29ms. Allocated memory is still 107.0MB. Free memory was 73.5MB in the beginning and 70.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:30:32,859 INFO L158 Benchmark]: Boogie Preprocessor took 34.92ms. Allocated memory is still 107.0MB. Free memory was 70.4MB in the beginning and 68.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:30:32,859 INFO L158 Benchmark]: RCFGBuilder took 535.53ms. Allocated memory is still 107.0MB. Free memory was 68.3MB in the beginning and 53.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:30:32,860 INFO L158 Benchmark]: TraceAbstraction took 1262.92ms. Allocated memory is still 107.0MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2022-11-23 14:30:32,860 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 107.0MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:30:32,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 79.7MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1196.07ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 35.0MB in the beginning and 73.5MB in the end (delta: -38.6MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.29ms. Allocated memory is still 107.0MB. Free memory was 73.5MB in the beginning and 70.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.92ms. Allocated memory is still 107.0MB. Free memory was 70.4MB in the beginning and 68.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.53ms. Allocated memory is still 107.0MB. Free memory was 68.3MB in the beginning and 53.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1262.92ms. Allocated memory is still 107.0MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 107.0MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1581] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=12, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=12] [L1582] CALL CWE190_Integer_Overflow__int_fgets_add_34_bad() [L1555] int data; [L1556] CWE190_Integer_Overflow__int_fgets_add_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data + 1 VAL [data=2147483647, data=2147483647, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] - UnprovableResult [Line: 1573]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, 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, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 1 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 [2022-11-23 14:30:32,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10ab3173-c3a3-4174-9ad4-4b148f27a9a0/bin/utaipan-Q6hlc19bkW/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 Result: UNKNOWN: Overapproximated counterexample