./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a --- 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-38b53e6 [2022-11-25 18:32:07,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:32:07,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:32:07,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:32:07,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:32:07,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:32:07,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:32:07,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:32:07,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:32:07,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:32:07,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:32:07,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:32:07,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:32:07,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:32:07,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:32:07,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:32:07,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:32:07,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:32:07,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:32:07,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:32:07,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:32:07,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:32:07,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:32:07,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:32:07,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:32:07,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:32:07,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:32:07,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:32:07,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:32:07,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:32:07,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:32:07,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:32:07,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:32:07,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:32:07,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:32:07,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:32:07,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:32:07,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:32:07,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:32:07,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:32:07,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:32:07,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 18:32:07,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:32:07,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:32:07,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:32:07,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:32:07,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:32:07,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:32:07,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:32:07,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:32:07,267 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:32:07,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:32:07,268 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:32:07,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:32:07,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:32:07,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:32:07,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:32:07,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:32:07,270 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:32:07,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:32:07,270 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:32:07,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:32:07,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:32:07,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:32:07,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:32:07,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:07,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:32:07,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:32:07,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:32:07,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:32:07,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:32:07,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:32:07,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:32:07,278 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:32:07,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:32:07,278 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a [2022-11-25 18:32:07,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:32:07,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:32:07,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:32:07,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:32:07,713 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:32:07,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2022-11-25 18:32:11,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:32:12,332 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:32:12,333 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2022-11-25 18:32:12,359 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data/370fbb33d/eb5f5e8acc63498e9c14a9e3046b1fa1/FLAG5d0d8fcc8 [2022-11-25 18:32:12,379 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data/370fbb33d/eb5f5e8acc63498e9c14a9e3046b1fa1 [2022-11-25 18:32:12,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:32:12,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:32:12,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:12,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:32:12,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:32:12,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:12" (1/1) ... [2022-11-25 18:32:12,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68306980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:12, skipping insertion in model container [2022-11-25 18:32:12,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:12" (1/1) ... [2022-11-25 18:32:12,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:32:12,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:32:13,031 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:32:13,592 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:32:13,600 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:13,603 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:13,606 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:13,607 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:13,644 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:32:13,648 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:32:13,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:13,669 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:32:13,693 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:32:13,752 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:32:13,754 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:13,756 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:13,759 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:13,760 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:13,766 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:32:13,769 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:32:13,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:13,961 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:32:13,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13 WrapperNode [2022-11-25 18:32:13,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:13,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:13,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:32:13,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:32:13,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,073 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 55 [2022-11-25 18:32:14,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:14,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:32:14,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:32:14,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:32:14,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,105 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:32:14,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:32:14,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:32:14,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:32:14,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (1/1) ... [2022-11-25 18:32:14,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:14,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:32:14,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:32:14,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:32:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 18:32:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 18:32:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 18:32:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:32:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 18:32:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:32:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:32:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:32:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:32:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 18:32:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:32:14,499 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:32:14,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:32:14,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:32:14,753 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:32:14,753 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:32:14,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:14 BoogieIcfgContainer [2022-11-25 18:32:14,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:32:14,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:32:14,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:32:14,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:32:14,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:32:12" (1/3) ... [2022-11-25 18:32:14,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375152c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:14, skipping insertion in model container [2022-11-25 18:32:14,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:13" (2/3) ... [2022-11-25 18:32:14,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375152c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:14, skipping insertion in model container [2022-11-25 18:32:14,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:14" (3/3) ... [2022-11-25 18:32:14,767 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2022-11-25 18:32:14,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:32:14,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:32:14,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:32:14,854 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=PETRI_NET, 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;@483e5f65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:32:14,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:32:14,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-11-25 18:32:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:32:14,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:32:14,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:32:14,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:32:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:32:14,883 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-11-25 18:32:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:32:14,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778799271] [2022-11-25 18:32:14,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:14,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:32:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:32:15,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:32:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:32:15,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:32:15,222 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:32:15,228 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 18:32:15,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 18:32:15,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:32:15,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:32:15,248 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:32:15,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:32:15 BoogieIcfgContainer [2022-11-25 18:32:15,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:32:15,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:32:15,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:32:15,319 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:32:15,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:14" (3/4) ... [2022-11-25 18:32:15,325 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:32:15,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:32:15,327 INFO L158 Benchmark]: Toolchain (without parser) took 2942.24ms. Allocated memory is still 157.3MB. Free memory was 123.2MB in the beginning and 100.0MB in the end (delta: 23.2MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-11-25 18:32:15,328 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 109.1MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:32:15,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1577.93ms. Allocated memory is still 157.3MB. Free memory was 123.2MB in the beginning and 60.3MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-25 18:32:15,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.02ms. Allocated memory is still 157.3MB. Free memory was 60.3MB in the beginning and 57.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:32:15,338 INFO L158 Benchmark]: Boogie Preprocessor took 35.07ms. Allocated memory is still 157.3MB. Free memory was 57.0MB in the beginning and 55.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:32:15,339 INFO L158 Benchmark]: RCFGBuilder took 644.91ms. Allocated memory is still 157.3MB. Free memory was 55.7MB in the beginning and 117.9MB in the end (delta: -62.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 18:32:15,340 INFO L158 Benchmark]: TraceAbstraction took 556.90ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 100.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 18:32:15,341 INFO L158 Benchmark]: Witness Printer took 7.88ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 100.0MB in the end (delta: 138.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:32:15,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 109.1MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1577.93ms. Allocated memory is still 157.3MB. Free memory was 123.2MB in the beginning and 60.3MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.02ms. Allocated memory is still 157.3MB. Free memory was 60.3MB in the beginning and 57.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.07ms. Allocated memory is still 157.3MB. Free memory was 57.0MB in the beginning and 55.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 644.91ms. Allocated memory is still 157.3MB. Free memory was 55.7MB in the beginning and 117.9MB in the end (delta: -62.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 556.90ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 100.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.88ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 100.0MB in the end (delta: 138.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1582]: 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 [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741827:1073741831}, argv={1073741827:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_52_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_sub_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_52c_badSink(data) [L1582] data - 1 VAL [\old(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] - UnprovableResult [Line: 1582]: 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, 24 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=24occurred 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 [2022-11-25 18:32:15,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a --- 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-38b53e6 [2022-11-25 18:32:18,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:32:18,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:32:18,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:32:18,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:32:18,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:32:18,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:32:18,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:32:18,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:32:18,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:32:18,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:32:18,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:32:18,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:32:18,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:32:18,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:32:18,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:32:18,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:32:18,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:32:18,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:32:18,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:32:18,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:32:18,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:32:18,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:32:18,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:32:18,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:32:18,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:32:18,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:32:18,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:32:18,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:32:18,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:32:18,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:32:18,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:32:18,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:32:18,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:32:18,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:32:18,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:32:18,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:32:18,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:32:18,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:32:18,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:32:18,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:32:18,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 18:32:18,683 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:32:18,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:32:18,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:32:18,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:32:18,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:32:18,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:32:18,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:32:18,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:32:18,689 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:32:18,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:32:18,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:32:18,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:32:18,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:32:18,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:32:18,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:32:18,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:32:18,692 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:32:18,692 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:32:18,693 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:32:18,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:32:18,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:32:18,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:32:18,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:32:18,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:32:18,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:32:18,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:18,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:32:18,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:32:18,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:32:18,696 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:32:18,696 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:32:18,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:32:18,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:32:18,697 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:32:18,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:32:18,697 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:32:18,698 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a [2022-11-25 18:32:19,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:32:19,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:32:19,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:32:19,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:32:19,279 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:32:19,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2022-11-25 18:32:23,647 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:32:24,156 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:32:24,156 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2022-11-25 18:32:24,192 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data/8d3b8c99a/ac50ae203d5d41a582925a6ffba1a9ae/FLAG2d1b5d154 [2022-11-25 18:32:24,220 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/data/8d3b8c99a/ac50ae203d5d41a582925a6ffba1a9ae [2022-11-25 18:32:24,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:32:24,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:32:24,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:24,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:32:24,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:32:24,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:24" (1/1) ... [2022-11-25 18:32:24,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5d00de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:24, skipping insertion in model container [2022-11-25 18:32:24,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:24" (1/1) ... [2022-11-25 18:32:24,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:32:24,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:32:24,943 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:32:25,527 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:32:25,538 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:25,543 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:25,558 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:25,559 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:25,596 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:32:25,599 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:32:25,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:25,625 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:32:25,658 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:32:25,800 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:32:25,803 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:25,808 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:32:25,811 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:25,821 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:32:25,827 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:32:25,833 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:32:25,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:26,113 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:32:26,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26 WrapperNode [2022-11-25 18:32:26,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:26,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:26,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:32:26,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:32:26,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,223 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 54 [2022-11-25 18:32:26,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:26,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:32:26,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:32:26,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:32:26,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:32:26,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:32:26,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:32:26,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:32:26,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (1/1) ... [2022-11-25 18:32:26,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:26,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:32:26,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:32:26,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:32:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 18:32:26,400 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 18:32:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 18:32:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:32:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:32:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:32:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:32:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:32:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:32:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 18:32:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 18:32:26,722 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:32:26,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:32:26,927 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:32:26,935 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:32:26,935 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:32:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:26 BoogieIcfgContainer [2022-11-25 18:32:26,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:32:26,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:32:26,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:32:26,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:32:26,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:32:24" (1/3) ... [2022-11-25 18:32:26,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ddad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:26, skipping insertion in model container [2022-11-25 18:32:26,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:26" (2/3) ... [2022-11-25 18:32:26,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ddad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:26, skipping insertion in model container [2022-11-25 18:32:26,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:26" (3/3) ... [2022-11-25 18:32:26,958 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2022-11-25 18:32:26,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:32:26,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:32:27,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:32:27,100 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=PETRI_NET, 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;@3e3111a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:32:27,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:32:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-11-25 18:32:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:32:27,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:32:27,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:32:27,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:32:27,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:32:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-11-25 18:32:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:32:27,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135560057] [2022-11-25 18:32:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:32:27,155 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 [2022-11-25 18:32:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:32:27,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:32:27,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:32:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:32:27,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:32:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:32:27,495 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 18:32:27,501 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:32:27,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 18:32:27,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 18:32:27,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:32:27,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:32:27,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:32:27,740 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:32:27,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:32:27 BoogieIcfgContainer [2022-11-25 18:32:27,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:32:27,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:32:27,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:32:27,809 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:32:27,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:26" (3/4) ... [2022-11-25 18:32:27,814 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:32:27,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:32:27,817 INFO L158 Benchmark]: Toolchain (without parser) took 3591.59ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 56.1MB in the beginning and 61.3MB in the end (delta: -5.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-11-25 18:32:27,818 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:32:27,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1886.35ms. Allocated memory is still 83.9MB. Free memory was 55.9MB in the beginning and 56.8MB in the end (delta: -893.0kB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2022-11-25 18:32:27,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.35ms. Allocated memory is still 83.9MB. Free memory was 56.8MB in the beginning and 53.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:32:27,823 INFO L158 Benchmark]: Boogie Preprocessor took 70.29ms. Allocated memory is still 83.9MB. Free memory was 53.9MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:32:27,825 INFO L158 Benchmark]: RCFGBuilder took 627.34ms. Allocated memory is still 83.9MB. Free memory was 51.8MB in the beginning and 37.9MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:32:27,826 INFO L158 Benchmark]: TraceAbstraction took 866.64ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 37.1MB in the beginning and 61.9MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:32:27,828 INFO L158 Benchmark]: Witness Printer took 7.73ms. Allocated memory is still 102.8MB. Free memory was 61.9MB in the beginning and 61.3MB in the end (delta: 633.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:32:27,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1886.35ms. Allocated memory is still 83.9MB. Free memory was 55.9MB in the beginning and 56.8MB in the end (delta: -893.0kB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.35ms. Allocated memory is still 83.9MB. Free memory was 56.8MB in the beginning and 53.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.29ms. Allocated memory is still 83.9MB. Free memory was 53.9MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 627.34ms. Allocated memory is still 83.9MB. Free memory was 51.8MB in the beginning and 37.9MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 866.64ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 37.1MB in the beginning and 61.9MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.73ms. Allocated memory is still 102.8MB. Free memory was 61.9MB in the beginning and 61.3MB in the end (delta: 633.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1582]: 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 [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_52_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_sub_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_52c_badSink(data) [L1582] data - 1 VAL [\old(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] - UnprovableResult [Line: 1582]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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=24occurred 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 [2022-11-25 18:32:27,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ef6cfd-da28-45f4-b96b-19165253b129/bin/uautomizer-ZsLfNo2U6R/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