./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_51_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_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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_38034180-588d-4455-bc35-4dd077f0bde8/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 863300ef352a4db483391d3992b05d2dffba32030335445915b9a52a355666ed --- 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 14:37:37,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:37:37,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:37:37,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:37:37,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:37:37,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:37:37,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:37:37,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:37:37,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:37:37,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:37:37,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:37:37,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:37:37,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:37:37,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:37:37,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:37:37,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:37:37,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:37:37,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:37:37,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:37:37,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:37:37,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:37:37,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:37:37,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:37:37,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:37:37,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:37:37,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:37:37,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:37:37,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:37:37,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:37:37,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:37:37,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:37:37,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:37:37,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:37:37,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:37:37,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:37:37,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:37:37,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:37:37,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:37:37,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:37:37,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:37:37,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:37:37,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 14:37:37,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:37:37,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:37:37,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:37:37,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:37:37,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:37:37,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:37:37,298 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:37:37,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:37:37,298 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:37:37,299 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:37:37,300 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:37:37,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:37:37,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:37:37,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:37:37,301 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:37:37,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:37:37,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:37:37,302 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:37:37,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:37:37,303 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:37:37,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:37:37,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:37:37,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:37:37,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:37:37,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:37:37,305 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:37:37,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:37:37,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:37:37,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:37:37,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:37:37,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:37:37,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:37,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:37:37,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:37:37,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:37:37,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:37:37,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:37:37,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:37:37,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:37:37,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:37:37,310 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_38034180-588d-4455-bc35-4dd077f0bde8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 863300ef352a4db483391d3992b05d2dffba32030335445915b9a52a355666ed [2022-11-23 14:37:37,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:37:37,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:37:37,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:37:37,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:37:37,708 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:37:37,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i [2022-11-23 14:37:40,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:37:41,202 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:37:41,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i [2022-11-23 14:37:41,245 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data/ec639edb9/8137ddfae3434bd8b90f2ab2170759e1/FLAGc225a16f6 [2022-11-23 14:37:41,266 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data/ec639edb9/8137ddfae3434bd8b90f2ab2170759e1 [2022-11-23 14:37:41,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:37:41,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:37:41,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:41,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:37:41,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:37:41,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:41" (1/1) ... [2022-11-23 14:37:41,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1907e3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:41, skipping insertion in model container [2022-11-23 14:37:41,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:41" (1/1) ... [2022-11-23 14:37:41,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:37:41,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:37:41,787 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:37:42,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:42,378 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:37:42,401 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:37:42,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:42,685 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:37:42,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42 WrapperNode [2022-11-23 14:37:42,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:42,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:42,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:37:42,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:37:42,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,798 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-11-23 14:37:42,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:42,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:37:42,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:37:42,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:37:42,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:37:42,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:37:42,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:37:42,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:37:42,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (1/1) ... [2022-11-23 14:37:42,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:42,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:42,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:37:42,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:37:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:37:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:37:42,958 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:37:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:37:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:37:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:37:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:37:42,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:37:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:37:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:37:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:37:43,168 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:37:43,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:37:43,385 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:37:43,423 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:37:43,423 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:37:43,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:43 BoogieIcfgContainer [2022-11-23 14:37:43,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:37:43,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:37:43,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:37:43,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:37:43,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:37:41" (1/3) ... [2022-11-23 14:37:43,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ed5592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:43, skipping insertion in model container [2022-11-23 14:37:43,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:42" (2/3) ... [2022-11-23 14:37:43,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ed5592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:43, skipping insertion in model container [2022-11-23 14:37:43,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:43" (3/3) ... [2022-11-23 14:37:43,436 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i [2022-11-23 14:37:43,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:37:43,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:37:43,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:37:43,525 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;@48fb67d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:37:43,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:37:43,530 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 14:37:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:37:43,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:43,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:37:43,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:37:43,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:43,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1634006193, now seen corresponding path program 1 times [2022-11-23 14:37:43,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:43,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104353320] [2022-11-23 14:37:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:43,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:37:43,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:37:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:37:43,865 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:37:43,868 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:37:43,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:37:43,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:37:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:37:43,880 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:37:43,888 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:37:43,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:37:43 BoogieIcfgContainer [2022-11-23 14:37:43,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:37:43,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:37:43,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:37:43,935 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:37:43,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:43" (3/4) ... [2022-11-23 14:37:43,939 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:37:43,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:37:43,941 INFO L158 Benchmark]: Toolchain (without parser) took 2667.45ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 78.5MB in the beginning and 137.9MB in the end (delta: -59.4MB). Peak memory consumption was 858.0kB. Max. memory is 16.1GB. [2022-11-23 14:37:43,942 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:37:43,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1409.51ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 78.5MB in the beginning and 114.8MB in the end (delta: -36.3MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-11-23 14:37:43,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.58ms. Allocated memory is still 195.0MB. Free memory was 114.8MB in the beginning and 111.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:37:43,952 INFO L158 Benchmark]: Boogie Preprocessor took 61.86ms. Allocated memory is still 195.0MB. Free memory was 111.9MB in the beginning and 109.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:37:43,953 INFO L158 Benchmark]: RCFGBuilder took 562.87ms. Allocated memory is still 195.0MB. Free memory was 109.8MB in the beginning and 155.7MB in the end (delta: -45.9MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-11-23 14:37:43,953 INFO L158 Benchmark]: TraceAbstraction took 504.31ms. Allocated memory is still 195.0MB. Free memory was 154.7MB in the beginning and 137.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 14:37:43,955 INFO L158 Benchmark]: Witness Printer took 4.78ms. Allocated memory is still 195.0MB. Free memory was 137.9MB in the beginning and 137.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:37:43,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1409.51ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 78.5MB in the beginning and 114.8MB in the end (delta: -36.3MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.58ms. Allocated memory is still 195.0MB. Free memory was 114.8MB in the beginning and 111.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.86ms. Allocated memory is still 195.0MB. Free memory was 111.9MB in the beginning and 109.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.87ms. Allocated memory is still 195.0MB. Free memory was 109.8MB in the beginning and 155.7MB in the end (delta: -45.9MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 504.31ms. Allocated memory is still 195.0MB. Free memory was 154.7MB in the beginning and 137.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.78ms. Allocated memory is still 195.0MB. Free memory was 137.9MB in the beginning and 137.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [#in~argv={1073741830:1073741829}, argc=1073741827, argv={1073741830:1073741829}, 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=1073741827] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_51_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_51b_badSink(data) [L1577] data-- VAL [data=-2147483648, data--=-2147483648, 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~data-unknown=-2147483648] - UnprovableResult [Line: 1577]: 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:37:43,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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_38034180-588d-4455-bc35-4dd077f0bde8/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 863300ef352a4db483391d3992b05d2dffba32030335445915b9a52a355666ed --- 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 14:37:46,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:37:46,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:37:46,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:37:46,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:37:46,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:37:46,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:37:46,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:37:46,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:37:46,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:37:46,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:37:46,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:37:46,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:37:46,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:37:46,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:37:46,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:37:46,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:37:46,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:37:46,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:37:46,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:37:46,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:37:46,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:37:46,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:37:46,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:37:46,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:37:46,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:37:46,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:37:46,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:37:46,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:37:46,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:37:46,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:37:46,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:37:46,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:37:46,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:37:46,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:37:46,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:37:46,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:37:46,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:37:46,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:37:46,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:37:46,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:37:46,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 14:37:46,697 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:37:46,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:37:46,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:37:46,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:37:46,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:37:46,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:37:46,700 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:37:46,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:37:46,701 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:37:46,701 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:37:46,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:37:46,702 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:37:46,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:37:46,703 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:37:46,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:37:46,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:37:46,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:37:46,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:37:46,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:37:46,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:37:46,705 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:37:46,705 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:37:46,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:37:46,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:37:46,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:37:46,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:37:46,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:37:46,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:37:46,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:46,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:37:46,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:37:46,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:37:46,708 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:37:46,708 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:37:46,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:37:46,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:37:46,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:37:46,710 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_38034180-588d-4455-bc35-4dd077f0bde8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 863300ef352a4db483391d3992b05d2dffba32030335445915b9a52a355666ed [2022-11-23 14:37:47,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:37:47,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:37:47,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:37:47,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:37:47,138 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:37:47,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i [2022-11-23 14:37:50,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:37:50,663 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:37:50,664 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i [2022-11-23 14:37:50,695 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data/f4619c92d/dae4ed6cf81e4e88b1a030377e095837/FLAG982f6782f [2022-11-23 14:37:50,709 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/data/f4619c92d/dae4ed6cf81e4e88b1a030377e095837 [2022-11-23 14:37:50,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:37:50,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:37:50,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:50,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:37:50,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:37:50,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:50" (1/1) ... [2022-11-23 14:37:50,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d3aac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:50, skipping insertion in model container [2022-11-23 14:37:50,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:50" (1/1) ... [2022-11-23 14:37:50,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:37:50,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:37:51,288 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:37:51,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:51,961 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:37:51,996 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:37:52,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:52,297 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:37:52,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52 WrapperNode [2022-11-23 14:37:52,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:52,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:52,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:37:52,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:37:52,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,402 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2022-11-23 14:37:52,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:52,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:37:52,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:37:52,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:37:52,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:37:52,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:37:52,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:37:52,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:37:52,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (1/1) ... [2022-11-23 14:37:52,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:52,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:37:52,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:37:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:37:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:37:52,579 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:37:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:37:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:37:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:37:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:37:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:37:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:37:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:37:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 14:37:52,833 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:37:52,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:37:53,058 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:37:53,091 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:37:53,091 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:37:53,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:53 BoogieIcfgContainer [2022-11-23 14:37:53,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:37:53,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:37:53,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:37:53,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:37:53,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:37:50" (1/3) ... [2022-11-23 14:37:53,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625d4a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:53, skipping insertion in model container [2022-11-23 14:37:53,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:52" (2/3) ... [2022-11-23 14:37:53,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625d4a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:53, skipping insertion in model container [2022-11-23 14:37:53,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:53" (3/3) ... [2022-11-23 14:37:53,117 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_51_bad.i [2022-11-23 14:37:53,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:37:53,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:37:53,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:37:53,220 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;@55e43c39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:37:53,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:37:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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 14:37:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:37:53,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:53,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:37:53,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:37:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-23 14:37:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:37:53,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436759877] [2022-11-23 14:37:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:53,267 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 14:37:53,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:37:53,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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 14:37:53,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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 14:37:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:37:53,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:37:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:37:53,567 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:37:53,569 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:37:53,571 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:37:53,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:37:53,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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 14:37:53,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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 14:37:53,788 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:37:53,797 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:37:53,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:37:53 BoogieIcfgContainer [2022-11-23 14:37:53,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:37:53,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:37:53,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:37:53,852 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:37:53,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:53" (3/4) ... [2022-11-23 14:37:53,856 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:37:53,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:37:53,858 INFO L158 Benchmark]: Toolchain (without parser) took 3144.70ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 52.8MB in the beginning and 48.4MB in the end (delta: 4.3MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-11-23 14:37:53,859 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:37:53,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1584.42ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 47.2MB in the end (delta: 5.3MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-23 14:37:53,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.39ms. Allocated memory is still 77.6MB. Free memory was 47.2MB in the beginning and 44.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:37:53,862 INFO L158 Benchmark]: Boogie Preprocessor took 70.68ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 42.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:37:53,864 INFO L158 Benchmark]: RCFGBuilder took 618.38ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 66.8MB in the end (delta: -24.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-23 14:37:53,865 INFO L158 Benchmark]: TraceAbstraction took 744.22ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 48.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 14:37:53,868 INFO L158 Benchmark]: Witness Printer took 7.30ms. Allocated memory is still 94.4MB. Free memory was 48.9MB in the beginning and 48.4MB in the end (delta: 506.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:37:53,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1584.42ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 47.2MB in the end (delta: 5.3MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.39ms. Allocated memory is still 77.6MB. Free memory was 47.2MB in the beginning and 44.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.68ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 42.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.38ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 66.8MB in the end (delta: -24.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * TraceAbstraction took 744.22ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 48.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.30ms. Allocated memory is still 94.4MB. Free memory was 48.9MB in the beginning and 48.4MB in the end (delta: 506.8kB). 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_51_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_51b_badSink(data) [L1577] data-- VAL [data=-2147483648, data--=-2147483648, 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~data-unknown=-2147483648] - UnprovableResult [Line: 1577]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:37:53,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38034180-588d-4455-bc35-4dd077f0bde8/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