./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8 --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 bbc64fd25d0eb5fa31633a8c76dba801bfa80f4d9146ca588047e7c404032713 --- 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-2329fc7 [2022-12-13 14:06:33,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:06:33,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:06:33,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:06:33,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:06:33,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:06:33,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:06:33,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:06:33,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:06:33,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:06:33,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:06:33,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:06:33,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:06:33,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:06:33,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:06:33,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:06:33,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:06:33,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:06:33,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:06:33,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:06:33,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:06:33,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:06:33,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:06:33,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:06:33,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:06:33,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:06:33,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:06:33,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:06:33,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:06:33,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:06:33,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:06:33,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:06:33,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:06:33,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:06:33,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:06:33,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:06:33,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:06:33,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:06:33,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:06:33,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:06:33,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:06:33,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 14:06:33,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:06:33,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:06:33,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:06:33,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:06:33,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:06:33,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:06:33,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:06:33,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:06:33,454 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:06:33,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:06:33,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:06:33,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:06:33,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:06:33,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:06:33,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:06:33,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:06:33,456 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:06:33,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:06:33,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:06:33,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:06:33,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:06:33,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:06:33,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:06:33,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:06:33,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:06:33,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:06:33,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:06:33,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:06:33,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:06:33,457 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:06:33,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:06:33,458 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:06:33,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:06:33,458 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:06:33,458 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_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbc64fd25d0eb5fa31633a8c76dba801bfa80f4d9146ca588047e7c404032713 [2022-12-13 14:06:33,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:06:33,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:06:33,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:06:33,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:06:33,652 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:06:33,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i [2022-12-13 14:06:36,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:06:36,423 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:06:36,423 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i [2022-12-13 14:06:36,437 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data/96fac7dd0/b05a3003909041acb2675b87d6c1fe23/FLAG1515054e7 [2022-12-13 14:06:36,754 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data/96fac7dd0/b05a3003909041acb2675b87d6c1fe23 [2022-12-13 14:06:36,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:06:36,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:06:36,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:06:36,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:06:36,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:06:36,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:06:36" (1/1) ... [2022-12-13 14:06:36,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ff5066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:36, skipping insertion in model container [2022-12-13 14:06:36,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:06:36" (1/1) ... [2022-12-13 14:06:36,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:06:36,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:06:37,027 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:06:37,338 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:06:37,342 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:37,344 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:37,345 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:37,346 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:37,365 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 14:06:37,368 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 14:06:37,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:06:37,376 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:06:37,389 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:06:37,419 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:06:37,420 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:37,421 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:37,423 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:37,424 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:37,427 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 14:06:37,429 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 14:06:37,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:06:37,552 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:06:37,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37 WrapperNode [2022-12-13 14:06:37,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:06:37,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:06:37,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:06:37,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:06:37,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,606 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-12-13 14:06:37,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:06:37,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:06:37,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:06:37,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:06:37,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:06:37,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:06:37,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:06:37,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:06:37,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (1/1) ... [2022-12-13 14:06:37,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:06:37,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:06:37,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:06:37,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:06:37,690 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 14:06:37,690 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 14:06:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 14:06:37,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:06:37,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 14:06:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:06:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:06:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:06:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:06:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 14:06:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:06:37,801 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:06:37,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:06:37,923 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:06:37,929 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:06:37,929 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 14:06:37,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:06:37 BoogieIcfgContainer [2022-12-13 14:06:37,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:06:37,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:06:37,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:06:37,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:06:37,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:06:36" (1/3) ... [2022-12-13 14:06:37,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1111a0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:06:37, skipping insertion in model container [2022-12-13 14:06:37,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:37" (2/3) ... [2022-12-13 14:06:37,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1111a0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:06:37, skipping insertion in model container [2022-12-13 14:06:37,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:06:37" (3/3) ... [2022-12-13 14:06:37,940 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i [2022-12-13 14:06:37,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:06:37,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 14:06:38,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:06:38,012 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;@2eb52a9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:06:38,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 14:06:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 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) [2022-12-13 14:06:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 14:06:38,022 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:38,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:38,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 14:06:38,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash 14720671, now seen corresponding path program 1 times [2022-12-13 14:06:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:06:38,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356629329] [2022-12-13 14:06:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:06:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:06:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:06:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:06:38,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356629329] [2022-12-13 14:06:38,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356629329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:06:38,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:06:38,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:06:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891197666] [2022-12-13 14:06:38,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:06:38,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:06:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:06:38,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:06:38,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:06:38,257 INFO L87 Difference]: Start difference. First operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:38,294 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-12-13 14:06:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:06:38,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-12-13 14:06:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:38,301 INFO L225 Difference]: With dead ends: 66 [2022-12-13 14:06:38,301 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 14:06:38,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:06:38,306 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:38,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:06:38,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 14:06:38,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2022-12-13 14:06:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:06:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-12-13 14:06:38,335 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 12 [2022-12-13 14:06:38,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:38,336 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-12-13 14:06:38,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-12-13 14:06:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 14:06:38,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:38,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:38,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:06:38,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 14:06:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash 457723184, now seen corresponding path program 1 times [2022-12-13 14:06:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:06:38,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093807505] [2022-12-13 14:06:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:06:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:06:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:06:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:06:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093807505] [2022-12-13 14:06:38,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093807505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:06:38,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:06:38,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:06:38,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356024938] [2022-12-13 14:06:38,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:06:38,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:06:38,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:06:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:06:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:06:38,441 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:38,470 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-12-13 14:06:38,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:06:38,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-12-13 14:06:38,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:38,472 INFO L225 Difference]: With dead ends: 38 [2022-12-13 14:06:38,472 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 14:06:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:06:38,473 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:38,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 85 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:06:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 14:06:38,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-12-13 14:06:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 33 states have internal predecessors, (36), 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) [2022-12-13 14:06:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-12-13 14:06:38,477 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 13 [2022-12-13 14:06:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:38,477 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-12-13 14:06:38,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-12-13 14:06:38,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 14:06:38,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:38,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:38,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:06:38,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 14:06:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1818569638, now seen corresponding path program 1 times [2022-12-13 14:06:38,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:06:38,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357084436] [2022-12-13 14:06:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:06:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:06:38,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:06:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:06:38,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:06:38,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:06:38,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-13 14:06:38,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-13 14:06:38,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-13 14:06:38,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-13 14:06:38,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-13 14:06:38,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-13 14:06:38,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:06:38,530 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 14:06:38,532 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:06:38,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:06:38 BoogieIcfgContainer [2022-12-13 14:06:38,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:06:38,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:06:38,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:06:38,552 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:06:38,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:06:37" (3/4) ... [2022-12-13 14:06:38,554 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 14:06:38,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:06:38,555 INFO L158 Benchmark]: Toolchain (without parser) took 1797.59ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 91.9MB in the beginning and 96.6MB in the end (delta: -4.7MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-12-13 14:06:38,555 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 127.9MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:38,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 794.84ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 91.9MB in the beginning and 107.4MB in the end (delta: -15.5MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. [2022-12-13 14:06:38,556 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.03ms. Allocated memory is still 159.4MB. Free memory was 107.4MB in the beginning and 104.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:06:38,556 INFO L158 Benchmark]: Boogie Preprocessor took 25.59ms. Allocated memory is still 159.4MB. Free memory was 104.1MB in the beginning and 102.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:38,556 INFO L158 Benchmark]: RCFGBuilder took 298.33ms. Allocated memory is still 159.4MB. Free memory was 102.0MB in the beginning and 88.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:06:38,557 INFO L158 Benchmark]: TraceAbstraction took 617.28ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 96.6MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:38,557 INFO L158 Benchmark]: Witness Printer took 2.98ms. Allocated memory is still 159.4MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:38,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 127.9MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 794.84ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 91.9MB in the beginning and 107.4MB in the end (delta: -15.5MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.03ms. Allocated memory is still 159.4MB. Free memory was 107.4MB in the beginning and 104.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.59ms. Allocated memory is still 159.4MB. Free memory was 104.1MB in the beginning and 102.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.33ms. Allocated memory is still 159.4MB. Free memory was 102.0MB in the beginning and 88.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 617.28ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 96.6MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.98ms. Allocated memory is still 159.4MB. Free memory is still 96.6MB. 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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] [L1579] 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) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, 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] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_17_bad() [L1550] int i,j; [L1551] int data; [L1552] data = 0 [L1553] i = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, i=0] [L1553] COND TRUE i < 1 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, i=0] [L1553] i++ VAL [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, i=1] [L1553] COND FALSE !(i < 1) VAL [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, i=1] [L1567] j = 0 VAL [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, i=1, j=0] [L1567] COND TRUE j < 1 [L1570] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, i=1, j=0] - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: 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, 35 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 69 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2022-12-13 14:06:38,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8 --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 bbc64fd25d0eb5fa31633a8c76dba801bfa80f4d9146ca588047e7c404032713 --- 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-2329fc7 [2022-12-13 14:06:40,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:06:40,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:06:40,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:06:40,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:06:40,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:06:40,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:06:40,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:06:40,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:06:40,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:06:40,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:06:40,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:06:40,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:06:40,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:06:40,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:06:40,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:06:40,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:06:40,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:06:40,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:06:40,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:06:40,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:06:40,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:06:40,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:06:40,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:06:40,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:06:40,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:06:40,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:06:40,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:06:40,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:06:40,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:06:40,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:06:40,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:06:40,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:06:40,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:06:40,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:06:40,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:06:40,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:06:40,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:06:40,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:06:40,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:06:40,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:06:40,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 14:06:40,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:06:40,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:06:40,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:06:40,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:06:40,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:06:40,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:06:40,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:06:40,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:06:40,376 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:06:40,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:06:40,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:06:40,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:06:40,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:06:40,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:06:40,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:06:40,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:06:40,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 14:06:40,378 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:06:40,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 14:06:40,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:06:40,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:06:40,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:06:40,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:06:40,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:06:40,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:06:40,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:06:40,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:06:40,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:06:40,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:06:40,380 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 14:06:40,385 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 14:06:40,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:06:40,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:06:40,386 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:06:40,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:06:40,386 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 14:06:40,386 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:06:40,387 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_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbc64fd25d0eb5fa31633a8c76dba801bfa80f4d9146ca588047e7c404032713 [2022-12-13 14:06:40,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:06:40,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:06:40,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:06:40,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:06:40,629 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:06:40,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i [2022-12-13 14:06:43,182 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:06:43,423 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:06:43,424 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i [2022-12-13 14:06:43,437 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data/8d191125a/71da878c16324fa18178ec2d124a9c1f/FLAGc373b35dc [2022-12-13 14:06:43,739 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/data/8d191125a/71da878c16324fa18178ec2d124a9c1f [2022-12-13 14:06:43,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:06:43,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:06:43,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:06:43,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:06:43,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:06:43,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:06:43" (1/1) ... [2022-12-13 14:06:43,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c36b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:43, skipping insertion in model container [2022-12-13 14:06:43,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:06:43" (1/1) ... [2022-12-13 14:06:43,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:06:43,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:06:44,028 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:06:44,319 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:06:44,323 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:44,324 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:44,325 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:44,325 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:44,342 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 14:06:44,344 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 14:06:44,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:06:44,355 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:06:44,368 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:06:44,412 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:06:44,413 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:44,414 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 14:06:44,415 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:44,416 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 14:06:44,419 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 14:06:44,421 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 14:06:44,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:06:44,512 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:06:44,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44 WrapperNode [2022-12-13 14:06:44,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:06:44,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:06:44,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:06:44,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:06:44,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,550 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2022-12-13 14:06:44,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:06:44,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:06:44,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:06:44,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:06:44,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:06:44,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:06:44,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:06:44,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:06:44,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (1/1) ... [2022-12-13 14:06:44,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:06:44,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:06:44,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:06:44,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:06:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 14:06:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 14:06:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 14:06:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:06:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 14:06:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:06:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:06:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:06:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:06:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 14:06:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 14:06:44,772 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:06:44,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:06:44,891 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:06:44,896 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:06:44,896 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 14:06:44,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:06:44 BoogieIcfgContainer [2022-12-13 14:06:44,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:06:44,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:06:44,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:06:44,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:06:44,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:06:43" (1/3) ... [2022-12-13 14:06:44,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713e2aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:06:44, skipping insertion in model container [2022-12-13 14:06:44,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:06:44" (2/3) ... [2022-12-13 14:06:44,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713e2aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:06:44, skipping insertion in model container [2022-12-13 14:06:44,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:06:44" (3/3) ... [2022-12-13 14:06:44,903 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_17_bad.i [2022-12-13 14:06:44,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:06:44,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 14:06:44,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:06:44,954 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;@4034921d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:06:44,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 14:06:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 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) [2022-12-13 14:06:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 14:06:44,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:44,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:44,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 14:06:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:44,967 INFO L85 PathProgramCache]: Analyzing trace with hash 14720671, now seen corresponding path program 1 times [2022-12-13 14:06:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:06:44,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848620513] [2022-12-13 14:06:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:44,976 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 [2022-12-13 14:06:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:06:44,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 14:06:44,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:06:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:45,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:06:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:06:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:06:45,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:06:45,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:06:45,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848620513] [2022-12-13 14:06:45,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848620513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:06:45,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:06:45,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:06:45,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002555035] [2022-12-13 14:06:45,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:06:45,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:06:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:06:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:06:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:06:45,163 INFO L87 Difference]: Start difference. First operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:45,206 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2022-12-13 14:06:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:06:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-12-13 14:06:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:45,215 INFO L225 Difference]: With dead ends: 63 [2022-12-13 14:06:45,215 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 14:06:45,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:06:45,221 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:45,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:06:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 14:06:45,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2022-12-13 14:06:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:06:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-12-13 14:06:45,257 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 12 [2022-12-13 14:06:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:45,257 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-12-13 14:06:45,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-12-13 14:06:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 14:06:45,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:45,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:45,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:06:45,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:06:45,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 14:06:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1304516880, now seen corresponding path program 1 times [2022-12-13 14:06:45,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:06:45,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696758932] [2022-12-13 14:06:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:45,467 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 [2022-12-13 14:06:45,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:06:45,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 14:06:45,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 14:06:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:45,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:06:45,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:06:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:06:45,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:06:45,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:06:45,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696758932] [2022-12-13 14:06:45,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696758932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:06:45,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:06:45,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:06:45,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199472154] [2022-12-13 14:06:45,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:06:45,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:06:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:06:45,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:06:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:06:45,605 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:45,657 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-12-13 14:06:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:06:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-12-13 14:06:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:45,659 INFO L225 Difference]: With dead ends: 34 [2022-12-13 14:06:45,659 INFO L226 Difference]: Without dead ends: 33 [2022-12-13 14:06:45,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:06:45,660 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:45,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 77 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:06:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-13 14:06:45,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-13 14:06:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 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) [2022-12-13 14:06:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-12-13 14:06:45,666 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 14 [2022-12-13 14:06:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:45,667 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-12-13 14:06:45,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 14:06:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-12-13 14:06:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 14:06:45,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:45,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:45,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 14:06:45,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:06:45,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 14:06:45,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1818569638, now seen corresponding path program 1 times [2022-12-13 14:06:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:06:45,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494773417] [2022-12-13 14:06:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:45,874 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 [2022-12-13 14:06:45,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:06:45,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 14:06:45,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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 (4)] Waiting until timeout for monitored process [2022-12-13 14:06:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:06:46,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:06:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:06:46,063 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 14:06:46,063 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:06:46,064 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-13 14:06:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-13 14:06:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-13 14:06:46,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-13 14:06:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-13 14:06:46,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-13 14:06:46,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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 (4)] Ended with exit code 0 [2022-12-13 14:06:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:06:46,271 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 14:06:46,275 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:06:46,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:06:46 BoogieIcfgContainer [2022-12-13 14:06:46,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:06:46,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:06:46,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:06:46,312 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:06:46,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:06:44" (3/4) ... [2022-12-13 14:06:46,317 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 14:06:46,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:06:46,318 INFO L158 Benchmark]: Toolchain (without parser) took 2575.80ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 43.8MB in the beginning and 46.8MB in the end (delta: -2.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-12-13 14:06:46,319 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:46,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 770.34ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 43.6MB in the beginning and 44.3MB in the end (delta: -670.7kB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-12-13 14:06:46,320 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.59ms. Allocated memory is still 83.9MB. Free memory was 44.3MB in the beginning and 41.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:06:46,321 INFO L158 Benchmark]: Boogie Preprocessor took 30.15ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 39.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:06:46,321 INFO L158 Benchmark]: RCFGBuilder took 315.04ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 46.0MB in the end (delta: -6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 14:06:46,322 INFO L158 Benchmark]: TraceAbstraction took 1412.64ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 46.8MB in the end (delta: -1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:46,322 INFO L158 Benchmark]: Witness Printer took 5.24ms. Allocated memory is still 83.9MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:46,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 770.34ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 43.6MB in the beginning and 44.3MB in the end (delta: -670.7kB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.59ms. Allocated memory is still 83.9MB. Free memory was 44.3MB in the beginning and 41.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.15ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 39.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.04ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 46.0MB in the end (delta: -6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1412.64ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 46.8MB in the end (delta: -1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.24ms. Allocated memory is still 83.9MB. Free memory is still 46.8MB. 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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] [L1579] 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) [L1579] 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] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_17_bad() [L1550] int i,j; [L1551] int data; [L1552] data = 0 [L1553] i = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, i=0] [L1553] COND TRUE i < 1 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, i=0] [L1553] i++ VAL [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, i=1] [L1553] COND FALSE !(i < 1) VAL [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, i=1] [L1567] j = 0 VAL [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, i=1, j=0] [L1567] COND TRUE j < 1 [L1570] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, i=1, j=0] - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: 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, 35 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 82 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 63 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 2 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2022-12-13 14:06:46,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71782189-f6e5-4ca6-93c1-7cf4447e0448/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample