./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:27:59,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:27:59,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:27:59,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:27:59,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:27:59,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:27:59,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:27:59,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:27:59,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:27:59,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:27:59,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:27:59,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:27:59,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:27:59,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:27:59,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:27:59,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:27:59,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:27:59,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:27:59,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:27:59,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:27:59,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:27:59,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:27:59,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:27:59,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:27:59,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:27:59,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:27:59,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:27:59,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:27:59,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:27:59,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:27:59,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:27:59,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:27:59,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:27:59,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:27:59,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:27:59,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:27:59,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:27:59,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:27:59,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:27:59,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:27:59,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:27:59,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-23 03:27:59,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:27:59,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:27:59,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:27:59,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:27:59,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:27:59,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:27:59,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:27:59,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:27:59,418 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:27:59,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:27:59,419 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:27:59,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:27:59,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:27:59,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:27:59,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:27:59,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:27:59,421 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:27:59,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:27:59,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:27:59,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:27:59,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:27:59,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:27:59,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:27:59,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:27:59,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:27:59,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:27:59,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:27:59,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:27:59,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:27:59,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:27:59,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:27:59,424 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:27:59,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:27:59,424 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_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 [2022-11-23 03:27:59,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:27:59,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:27:59,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:27:59,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:27:59,731 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:27:59,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2022-11-23 03:28:02,805 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:28:03,256 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:28:03,257 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2022-11-23 03:28:03,290 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data/02ab4f55c/efe5927ef2e04d299bbc89db2b0263cb/FLAG0c651fca6 [2022-11-23 03:28:03,308 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data/02ab4f55c/efe5927ef2e04d299bbc89db2b0263cb [2022-11-23 03:28:03,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:28:03,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:28:03,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:28:03,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:28:03,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:28:03,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:03" (1/1) ... [2022-11-23 03:28:03,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62200375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:03, skipping insertion in model container [2022-11-23 03:28:03,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:03" (1/1) ... [2022-11-23 03:28:03,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:28:03,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:28:03,825 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:28:04,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:28:04,399 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:28:04,418 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:28:04,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:28:04,667 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:28:04,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04 WrapperNode [2022-11-23 03:28:04,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:28:04,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:28:04,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:28:04,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:28:04,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,724 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-23 03:28:04,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:28:04,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:28:04,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:28:04,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:28:04,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:28:04,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:28:04,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:28:04,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:28:04,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (1/1) ... [2022-11-23 03:28:04,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:28:04,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:28:04,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:28:04,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:28:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 03:28:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 03:28:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 03:28:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:28:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 03:28:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:28:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:28:04,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:28:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2022-11-23 03:28:04,848 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2022-11-23 03:28:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:28:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 03:28:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:28:05,090 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:28:05,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:28:05,291 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:28:05,300 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:28:05,301 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:28:05,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:05 BoogieIcfgContainer [2022-11-23 03:28:05,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:28:05,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:28:05,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:28:05,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:28:05,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:28:03" (1/3) ... [2022-11-23 03:28:05,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595686a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:05, skipping insertion in model container [2022-11-23 03:28:05,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:04" (2/3) ... [2022-11-23 03:28:05,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595686a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:05, skipping insertion in model container [2022-11-23 03:28:05,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:05" (3/3) ... [2022-11-23 03:28:05,319 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2022-11-23 03:28:05,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:28:05,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:28:05,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:28:05,415 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;@16c8ad66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:28:05,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:28:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 03:28:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:28:05,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:28:05,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:28:05,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 03:28:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1996056410, now seen corresponding path program 1 times [2022-11-23 03:28:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:28:05,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609625844] [2022-11-23 03:28:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:05,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:28:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:28:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:28:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:05,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 03:28:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:28:05,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:28:05,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609625844] [2022-11-23 03:28:05,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609625844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:28:05,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085793565] [2022-11-23 03:28:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:05,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:28:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:28:05,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:28:06,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:28:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:06,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:28:06,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 03:28:06,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:06,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085793565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:06,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:28:06,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-23 03:28:06,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049032571] [2022-11-23 03:28:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:06,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:28:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:28:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:28:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:28:06,221 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 03:28:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:28:06,269 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-11-23 03:28:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:28:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-23 03:28:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:28:06,280 INFO L225 Difference]: With dead ends: 45 [2022-11-23 03:28:06,281 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 03:28:06,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:28:06,291 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:28:06,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 75 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:28:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 03:28:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-11-23 03:28:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 03:28:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-23 03:28:06,333 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 21 [2022-11-23 03:28:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:28:06,335 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-23 03:28:06,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 03:28:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-23 03:28:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 03:28:06,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:28:06,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:28:06,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:28:06,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 03:28:06,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 03:28:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1748206499, now seen corresponding path program 1 times [2022-11-23 03:28:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:28:06,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324949237] [2022-11-23 03:28:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:06,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:28:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:06,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:28:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:28:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 03:28:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:28:06,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:28:06,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324949237] [2022-11-23 03:28:06,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324949237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:28:06,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383542562] [2022-11-23 03:28:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:06,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:28:06,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:28:06,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:28:06,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:28:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:06,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:28:06,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 03:28:06,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:06,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383542562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:06,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:28:06,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-23 03:28:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530726968] [2022-11-23 03:28:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:06,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:28:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:28:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:28:06,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:28:06,832 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 03:28:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:28:06,843 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-11-23 03:28:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:28:06,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-11-23 03:28:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:28:06,844 INFO L225 Difference]: With dead ends: 31 [2022-11-23 03:28:06,844 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 03:28:06,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:28:06,846 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:28:06,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:28:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 03:28:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 03:28:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 03:28:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-23 03:28:06,852 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 22 [2022-11-23 03:28:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:28:06,852 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-23 03:28:06,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 03:28:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-23 03:28:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 03:28:06,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:28:06,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:28:06,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:07,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:28:07,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 03:28:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 268010891, now seen corresponding path program 1 times [2022-11-23 03:28:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:28:07,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678793702] [2022-11-23 03:28:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:28:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:28:07,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:28:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:28:07,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:28:07,129 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:28:07,130 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 03:28:07,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 03:28:07,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:28:07,136 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 03:28:07,140 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:28:07,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:28:07 BoogieIcfgContainer [2022-11-23 03:28:07,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:28:07,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:28:07,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:28:07,176 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:28:07,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:05" (3/4) ... [2022-11-23 03:28:07,179 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:28:07,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:28:07,182 INFO L158 Benchmark]: Toolchain (without parser) took 3865.85ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 86.1MB in the beginning and 76.8MB in the end (delta: 9.3MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2022-11-23 03:28:07,186 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:28:07,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1350.84ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 85.7MB in the beginning and 112.1MB in the end (delta: -26.4MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. [2022-11-23 03:28:07,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.38ms. Allocated memory is still 163.6MB. Free memory was 112.1MB in the beginning and 109.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:28:07,190 INFO L158 Benchmark]: Boogie Preprocessor took 49.65ms. Allocated memory is still 163.6MB. Free memory was 109.3MB in the beginning and 108.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:28:07,191 INFO L158 Benchmark]: RCFGBuilder took 528.02ms. Allocated memory is still 163.6MB. Free memory was 108.0MB in the beginning and 94.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 03:28:07,191 INFO L158 Benchmark]: TraceAbstraction took 1867.65ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 77.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-11-23 03:28:07,192 INFO L158 Benchmark]: Witness Printer took 6.05ms. Allocated memory is still 163.6MB. Free memory was 77.8MB in the beginning and 76.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:28:07,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1350.84ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 85.7MB in the beginning and 112.1MB in the end (delta: -26.4MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.38ms. Allocated memory is still 163.6MB. Free memory was 112.1MB in the beginning and 109.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.65ms. Allocated memory is still 163.6MB. Free memory was 109.3MB in the beginning and 108.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.02ms. Allocated memory is still 163.6MB. Free memory was 108.0MB in the beginning and 94.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1867.65ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 77.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * Witness Printer took 6.05ms. Allocated memory is still 163.6MB. Free memory was 77.8MB in the beginning and 76.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566. 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] [L1585] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1585] RET printLine("Calling bad()...") VAL [#in~argv={1073741827:1073741830}, argc=1073741829, argv={1073741827:1073741830}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=1073741829] [L1586] CALL CWE191_Integer_Underflow__int_fgets_sub_08_bad() [L1558] int data; [L1559] data = 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] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1560] COND TRUE staticReturnsTrue() [L1563] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1563] 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] [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1574] COND TRUE staticReturnsTrue() [L1577] data - 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] - UnprovableResult [Line: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 78 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 03:28:07,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:28:09,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:28:09,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:28:09,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:28:09,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:28:09,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:28:09,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:28:09,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:28:09,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:28:09,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:28:09,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:28:09,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:28:09,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:28:09,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:28:09,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:28:09,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:28:09,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:28:09,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:28:09,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:28:09,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:28:09,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:28:09,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:28:09,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:28:09,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:28:09,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:28:09,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:28:09,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:28:09,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:28:09,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:28:09,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:28:09,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:28:09,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:28:09,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:28:09,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:28:09,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:28:09,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:28:09,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:28:09,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:28:09,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:28:09,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:28:09,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:28:09,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-23 03:28:09,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:28:09,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:28:09,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:28:09,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:28:09,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:28:09,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:28:09,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:28:09,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:28:09,962 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:28:09,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:28:09,964 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:28:09,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:28:09,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:28:09,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:28:09,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:28:09,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:28:09,965 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 03:28:09,966 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:28:09,966 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 03:28:09,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:28:09,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:28:09,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:28:09,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:28:09,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:28:09,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:28:09,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:28:09,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:28:09,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:28:09,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:28:09,969 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 03:28:09,969 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 03:28:09,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:28:09,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:28:09,970 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:28:09,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:28:09,970 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 03:28:09,970 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_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 [2022-11-23 03:28:10,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:28:10,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:28:10,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:28:10,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:28:10,413 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:28:10,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2022-11-23 03:28:13,535 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:28:13,974 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:28:13,974 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2022-11-23 03:28:14,005 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data/c7ee406a8/107502ba781141cb8437a6daf8313429/FLAG3e473811f [2022-11-23 03:28:14,037 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/data/c7ee406a8/107502ba781141cb8437a6daf8313429 [2022-11-23 03:28:14,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:28:14,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:28:14,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:28:14,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:28:14,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:28:14,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:14" (1/1) ... [2022-11-23 03:28:14,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d0dc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:14, skipping insertion in model container [2022-11-23 03:28:14,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:14" (1/1) ... [2022-11-23 03:28:14,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:28:14,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:28:14,593 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:28:15,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:28:15,065 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:28:15,085 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:28:15,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:28:15,299 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:28:15,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15 WrapperNode [2022-11-23 03:28:15,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:28:15,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:28:15,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:28:15,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:28:15,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,354 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-11-23 03:28:15,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:28:15,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:28:15,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:28:15,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:28:15,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:28:15,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:28:15,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:28:15,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:28:15,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (1/1) ... [2022-11-23 03:28:15,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:28:15,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:28:15,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:28:15,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:28:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 03:28:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 03:28:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 03:28:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:28:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 03:28:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:28:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:28:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:28:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2022-11-23 03:28:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2022-11-23 03:28:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:28:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 03:28:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 03:28:15,676 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:28:15,693 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:28:15,916 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:28:15,921 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:28:15,922 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:28:15,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:15 BoogieIcfgContainer [2022-11-23 03:28:15,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:28:15,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:28:15,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:28:15,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:28:15,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:28:14" (1/3) ... [2022-11-23 03:28:15,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca1af80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:15, skipping insertion in model container [2022-11-23 03:28:15,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:15" (2/3) ... [2022-11-23 03:28:15,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca1af80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:15, skipping insertion in model container [2022-11-23 03:28:15,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:15" (3/3) ... [2022-11-23 03:28:15,932 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2022-11-23 03:28:15,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:28:15,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:28:16,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:28:16,018 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;@53d8dded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:28:16,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:28:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 03:28:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 03:28:16,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:28:16,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:28:16,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 03:28:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash -918563445, now seen corresponding path program 1 times [2022-11-23 03:28:16,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:16,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79561242] [2022-11-23 03:28:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:16,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:28:16,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:16,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:28:16,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 03:28:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:28:16,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:28:16,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:28:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:28:16,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:28:16,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:28:16,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79561242] [2022-11-23 03:28:16,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79561242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:28:16,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:28:16,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:28:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836277799] [2022-11-23 03:28:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:28:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:28:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:28:16,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:28:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:28:16,426 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 03:28:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:28:16,507 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2022-11-23 03:28:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:28:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-11-23 03:28:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:28:16,519 INFO L225 Difference]: With dead ends: 48 [2022-11-23 03:28:16,519 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 03:28:16,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:28:16,528 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 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 [2022-11-23 03:28:16,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:28:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 03:28:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 03:28:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 03:28:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-23 03:28:16,568 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 19 [2022-11-23 03:28:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:28:16,570 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-23 03:28:16,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 03:28:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-23 03:28:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:28:16,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:28:16,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:28:16,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:16,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:28:16,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 03:28:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:28:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1561712550, now seen corresponding path program 1 times [2022-11-23 03:28:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:28:16,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868915442] [2022-11-23 03:28:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:28:16,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:28:16,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:28:16,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:28:16,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 03:28:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:28:16,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:28:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:28:17,029 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-23 03:28:17,029 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:28:17,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 03:28:17,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 03:28:17,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:28:17,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:28:17,237 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 03:28:17,240 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:28:17,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:28:17 BoogieIcfgContainer [2022-11-23 03:28:17,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:28:17,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:28:17,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:28:17,272 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:28:17,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:15" (3/4) ... [2022-11-23 03:28:17,275 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:28:17,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:28:17,276 INFO L158 Benchmark]: Toolchain (without parser) took 3234.98ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 40.3MB in the beginning and 41.6MB in the end (delta: -1.3MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-23 03:28:17,276 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 71.3MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:28:17,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1256.29ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 50.3MB in the end (delta: -10.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 03:28:17,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.85ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 47.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:28:17,278 INFO L158 Benchmark]: Boogie Preprocessor took 32.14ms. Allocated memory is still 86.0MB. Free memory was 47.4MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:28:17,279 INFO L158 Benchmark]: RCFGBuilder took 535.79ms. Allocated memory is still 86.0MB. Free memory was 45.3MB in the beginning and 52.9MB in the end (delta: -7.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 03:28:17,279 INFO L158 Benchmark]: TraceAbstraction took 1345.19ms. Allocated memory is still 86.0MB. Free memory was 52.6MB in the beginning and 42.1MB in the end (delta: 10.4MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-11-23 03:28:17,280 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 86.0MB. Free memory was 42.1MB in the beginning and 41.6MB in the end (delta: 542.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:28:17,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 71.3MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1256.29ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 50.3MB in the end (delta: -10.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.85ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 47.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.14ms. Allocated memory is still 86.0MB. Free memory was 47.4MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.79ms. Allocated memory is still 86.0MB. Free memory was 45.3MB in the beginning and 52.9MB in the end (delta: -7.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1345.19ms. Allocated memory is still 86.0MB. Free memory was 52.6MB in the beginning and 42.1MB in the end (delta: 10.4MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 86.0MB. Free memory was 42.1MB in the beginning and 41.6MB in the end (delta: 542.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566. 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] [L1585] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1585] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=12, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=12] [L1586] CALL CWE191_Integer_Underflow__int_fgets_sub_08_bad() [L1558] int data; [L1559] data = 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] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1560] COND TRUE staticReturnsTrue() [L1563] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1563] 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] [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1574] COND TRUE staticReturnsTrue() [L1577] data - 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] - UnprovableResult [Line: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 03:28:17,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ebde858-ab9d-4f87-87d0-84ea95a55ab5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample