./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS --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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- 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 03:41:14,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:41:14,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:41:14,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:41:14,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:41:14,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:41:14,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:41:14,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:41:14,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:41:14,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:41:14,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:41:14,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:41:14,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:41:14,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:41:14,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:41:14,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:41:14,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:41:14,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:41:14,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:41:14,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:41:14,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:41:14,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:41:14,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:41:14,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:41:14,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:41:14,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:41:14,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:41:14,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:41:14,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:41:14,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:41:14,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:41:14,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:41:14,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:41:14,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:41:14,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:41:14,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:41:14,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:41:14,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:41:14,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:41:14,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:41:14,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:41:14,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-23 03:41:14,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:41:14,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:41:14,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:41:14,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:41:14,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:41:14,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:41:14,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:41:14,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:41:14,300 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:41:14,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:41:14,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:41:14,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:41:14,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:41:14,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:41:14,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:41:14,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:41:14,301 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:41:14,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:41:14,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:41:14,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:41:14,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:41:14,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:41:14,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:41:14,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:41:14,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:41:14,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:41:14,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:41:14,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:41:14,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:41:14,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:41:14,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:41:14,304 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:41:14,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:41:14,304 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_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2022-11-23 03:41:14,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:41:14,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:41:14,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:41:14,615 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:41:14,616 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:41:14,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-11-23 03:41:17,604 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:41:17,961 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:41:17,962 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-11-23 03:41:17,999 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data/77643e9b8/8ac6ce42c3864b5ba5f6007a6fe9bc15/FLAGabe644fe1 [2022-11-23 03:41:18,024 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data/77643e9b8/8ac6ce42c3864b5ba5f6007a6fe9bc15 [2022-11-23 03:41:18,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:41:18,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:41:18,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:41:18,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:41:18,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:41:18,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:18" (1/1) ... [2022-11-23 03:41:18,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f08515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:18, skipping insertion in model container [2022-11-23 03:41:18,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:18" (1/1) ... [2022-11-23 03:41:18,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:41:18,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:41:18,606 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:41:19,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:41:19,297 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:41:19,319 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:41:19,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:41:19,537 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:41:19,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19 WrapperNode [2022-11-23 03:41:19,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:41:19,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:41:19,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:41:19,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:41:19,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,619 INFO L138 Inliner]: procedures = 501, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2022-11-23 03:41:19,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:41:19,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:41:19,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:41:19,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:41:19,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:41:19,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:41:19,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:41:19,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:41:19,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (1/1) ... [2022-11-23 03:41:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:41:19,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:19,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:41:19,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:41:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 03:41:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 03:41:19,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 03:41:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:41:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 03:41:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:41:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:41:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:41:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:41:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:41:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 03:41:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:41:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:41:19,886 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:41:19,888 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:41:20,173 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:41:20,179 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:41:20,180 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:41:20,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:20 BoogieIcfgContainer [2022-11-23 03:41:20,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:41:20,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:41:20,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:41:20,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:41:20,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:18" (1/3) ... [2022-11-23 03:41:20,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e59c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:20, skipping insertion in model container [2022-11-23 03:41:20,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:19" (2/3) ... [2022-11-23 03:41:20,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e59c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:20, skipping insertion in model container [2022-11-23 03:41:20,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:20" (3/3) ... [2022-11-23 03:41:20,190 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-11-23 03:41:20,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:41:20,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:41:20,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:41:20,284 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;@143d263d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:41:20,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:41:20,290 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 03:41:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 03:41:20,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:20,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:20,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 03:41:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:20,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-23 03:41:20,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:20,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981446877] [2022-11-23 03:41:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:41:20,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:41:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:41:20,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:41:20,603 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:41:20,604 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 03:41:20,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 03:41:20,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:41:20,610 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 03:41:20,614 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:41:20,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:41:20 BoogieIcfgContainer [2022-11-23 03:41:20,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:41:20,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:41:20,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:41:20,646 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:41:20,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:20" (3/4) ... [2022-11-23 03:41:20,650 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:41:20,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:41:20,652 INFO L158 Benchmark]: Toolchain (without parser) took 2618.98ms. Allocated memory is still 192.9MB. Free memory was 153.1MB in the beginning and 105.9MB in the end (delta: 47.2MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-11-23 03:41:20,652 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:41:20,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1500.50ms. Allocated memory is still 192.9MB. Free memory was 152.6MB in the beginning and 144.6MB in the end (delta: 8.1MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2022-11-23 03:41:20,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.98ms. Allocated memory is still 192.9MB. Free memory was 143.7MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:41:20,654 INFO L158 Benchmark]: Boogie Preprocessor took 28.45ms. Allocated memory is still 192.9MB. Free memory was 140.7MB in the beginning and 139.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:41:20,655 INFO L158 Benchmark]: RCFGBuilder took 531.90ms. Allocated memory is still 192.9MB. Free memory was 139.5MB in the beginning and 126.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 03:41:20,655 INFO L158 Benchmark]: TraceAbstraction took 460.67ms. Allocated memory is still 192.9MB. Free memory was 124.8MB in the beginning and 106.8MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 03:41:20,656 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 192.9MB. Free memory was 106.8MB in the beginning and 105.9MB in the end (delta: 866.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:41:20,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1500.50ms. Allocated memory is still 192.9MB. Free memory was 152.6MB in the beginning and 144.6MB in the end (delta: 8.1MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.98ms. Allocated memory is still 192.9MB. Free memory was 143.7MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.45ms. Allocated memory is still 192.9MB. Free memory was 140.7MB in the beginning and 139.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.90ms. Allocated memory is still 192.9MB. Free memory was 139.5MB in the beginning and 126.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 460.67ms. Allocated memory is still 192.9MB. Free memory was 124.8MB in the beginning and 106.8MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 192.9MB. Free memory was 106.8MB in the beginning and 105.9MB in the end (delta: 866.1kB). 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: 1578]: 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={1073741827:1073741834}, argc=1073741833, argv={1073741827:1073741834}, 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=1073741833] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_63_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_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data VAL [#in~dataPtr={7:0}, data=-2147483648, dataPtr={7:0}, 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: 1578]: 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: 0.4s, 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=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 03:41:20,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS --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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- 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 03:41:23,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:41:23,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:41:23,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:41:23,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:41:23,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:41:23,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:41:23,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:41:23,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:41:23,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:41:23,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:41:23,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:41:23,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:41:23,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:41:23,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:41:23,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:41:23,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:41:23,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:41:23,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:41:23,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:41:23,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:41:23,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:41:23,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:41:23,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:41:23,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:41:23,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:41:23,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:41:23,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:41:23,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:41:23,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:41:23,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:41:23,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:41:23,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:41:23,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:41:23,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:41:23,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:41:23,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:41:23,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:41:23,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:41:23,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:41:23,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:41:23,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-23 03:41:23,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:41:23,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:41:23,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:41:23,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:41:23,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:41:23,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:41:23,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:41:23,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:41:23,522 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:41:23,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:41:23,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:41:23,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:41:23,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:41:23,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:41:23,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:41:23,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:41:23,525 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 03:41:23,525 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:41:23,525 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 03:41:23,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:41:23,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:41:23,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:41:23,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:41:23,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:41:23,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:41:23,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:41:23,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:41:23,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:41:23,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:41:23,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 03:41:23,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 03:41:23,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:41:23,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:41:23,530 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:41:23,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:41:23,531 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 03:41:23,531 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_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2022-11-23 03:41:23,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:41:23,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:41:24,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:41:24,004 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:41:24,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:41:24,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-11-23 03:41:27,376 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:41:27,833 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:41:27,834 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-11-23 03:41:27,859 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data/2a5f6eb3d/9a14ae584f7f4f78ac150c873b2b7bc4/FLAG919e4d11b [2022-11-23 03:41:27,885 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/data/2a5f6eb3d/9a14ae584f7f4f78ac150c873b2b7bc4 [2022-11-23 03:41:27,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:41:27,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:41:27,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:41:27,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:41:27,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:41:27,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:27" (1/1) ... [2022-11-23 03:41:27,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6a982b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:27, skipping insertion in model container [2022-11-23 03:41:27,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:27" (1/1) ... [2022-11-23 03:41:27,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:41:27,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:41:28,468 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:41:29,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:41:29,093 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:41:29,118 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:41:29,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:41:29,437 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:41:29,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29 WrapperNode [2022-11-23 03:41:29,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:41:29,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:41:29,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:41:29,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:41:29,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,550 INFO L138 Inliner]: procedures = 506, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-11-23 03:41:29,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:41:29,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:41:29,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:41:29,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:41:29,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,607 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:41:29,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:41:29,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:41:29,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:41:29,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (1/1) ... [2022-11-23 03:41:29,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:41:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:29,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:41:29,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:41:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 03:41:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 03:41:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 03:41:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:41:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 03:41:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:41:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:41:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:41:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 03:41:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:41:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 03:41:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 03:41:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 03:41:30,039 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:41:30,042 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:41:30,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:41:30,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:41:30,346 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:41:30,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:30 BoogieIcfgContainer [2022-11-23 03:41:30,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:41:30,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:41:30,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:41:30,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:41:30,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:27" (1/3) ... [2022-11-23 03:41:30,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c469c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:30, skipping insertion in model container [2022-11-23 03:41:30,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:29" (2/3) ... [2022-11-23 03:41:30,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c469c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:30, skipping insertion in model container [2022-11-23 03:41:30,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:30" (3/3) ... [2022-11-23 03:41:30,368 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-11-23 03:41:30,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:41:30,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:41:30,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:41:30,467 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;@6e4446bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:41:30,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:41:30,473 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 03:41:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 03:41:30,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:30,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:30,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 03:41:30,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:30,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-23 03:41:30,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:41:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887929719] [2022-11-23 03:41:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:30,512 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 03:41:30,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:41:30,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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 03:41:30,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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 03:41:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:41:30,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:41:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:41:30,892 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-23 03:41:30,894 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:41:30,896 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 03:41:30,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 03:41:30,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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 03:41:31,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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 03:41:31,110 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 03:41:31,114 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:41:31,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:41:31 BoogieIcfgContainer [2022-11-23 03:41:31,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:41:31,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:41:31,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:41:31,145 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:41:31,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:30" (3/4) ... [2022-11-23 03:41:31,165 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:41:31,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:41:31,166 INFO L158 Benchmark]: Toolchain (without parser) took 3275.89ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 30.1MB in the beginning and 52.6MB in the end (delta: -22.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-11-23 03:41:31,167 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:41:31,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1546.88ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 30.0MB in the beginning and 65.5MB in the end (delta: -35.5MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2022-11-23 03:41:31,168 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.37ms. Allocated memory is still 92.3MB. Free memory was 65.5MB in the beginning and 62.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 03:41:31,169 INFO L158 Benchmark]: Boogie Preprocessor took 71.52ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 60.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:41:31,169 INFO L158 Benchmark]: RCFGBuilder took 724.43ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 45.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 03:41:31,170 INFO L158 Benchmark]: TraceAbstraction took 793.46ms. Allocated memory is still 92.3MB. Free memory was 44.5MB in the beginning and 52.6MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:41:31,170 INFO L158 Benchmark]: Witness Printer took 20.67ms. Allocated memory is still 92.3MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:41:31,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1546.88ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 30.0MB in the beginning and 65.5MB in the end (delta: -35.5MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.37ms. Allocated memory is still 92.3MB. Free memory was 65.5MB in the beginning and 62.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.52ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 60.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 724.43ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 45.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 793.46ms. Allocated memory is still 92.3MB. Free memory was 44.5MB in the beginning and 52.6MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 20.67ms. Allocated memory is still 92.3MB. Free memory is still 52.6MB. 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: 1578]: 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_predec_63_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_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data VAL [#in~dataPtr={15:0}, data=-2147483648, dataPtr={15:0}, 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: 1578]: 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: 0.7s, 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=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 03:41:31,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89aa2600-0804-496a-a5bf-771c2b80d176/bin/uautomizer-QkZJyEgLgS/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