./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:53:14,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:53:14,207 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-08 16:53:14,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:53:14,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:53:14,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:53:14,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:53:14,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:53:14,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:53:14,256 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:53:14,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:53:14,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:53:14,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:53:14,262 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:53:14,263 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:53:14,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:53:14,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:53:14,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:53:14,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:53:14,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:53:14,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:53:14,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:53:14,270 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:53:14,270 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:53:14,272 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:53:14,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:53:14,273 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:53:14,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:53:14,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:53:14,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:53:14,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:53:14,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:53:14,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:53:14,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:53:14,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:53:14,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:53:14,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:53:14,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:53:14,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:53:14,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:53:14,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:53:14,279 INFO L153 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_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 [2024-11-08 16:53:14,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:53:14,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:53:14,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:53:14,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:53:14,591 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:53:14,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i Unable to find full path for "g++" [2024-11-08 16:53:16,615 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:53:16,967 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:53:16,968 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2024-11-08 16:53:17,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data/8492c38d0/8805ee697b744d6fabf3f1c3ba5e13ab/FLAG3772f9ff0 [2024-11-08 16:53:17,020 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data/8492c38d0/8805ee697b744d6fabf3f1c3ba5e13ab [2024-11-08 16:53:17,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:53:17,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:53:17,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:53:17,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:53:17,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:53:17,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:17" (1/1) ... [2024-11-08 16:53:17,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0ef2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:17, skipping insertion in model container [2024-11-08 16:53:17,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:17" (1/1) ... [2024-11-08 16:53:17,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:53:18,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:53:18,167 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:53:18,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:53:18,450 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:53:18,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18 WrapperNode [2024-11-08 16:53:18,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:53:18,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:53:18,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:53:18,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:53:18,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,532 INFO L138 Inliner]: procedures = 499, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-08 16:53:18,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:53:18,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:53:18,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:53:18,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:53:18,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,564 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-11-08 16:53:18,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:53:18,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:53:18,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:53:18,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:53:18,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (1/1) ... [2024-11-08 16:53:18,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:53:18,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:18,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:53:18,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:53:18,646 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 16:53:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 16:53:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:53:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:53:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:53:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:53:18,801 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:53:18,803 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:53:18,953 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-08 16:53:18,953 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:53:18,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:53:18,965 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:53:18,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:18 BoogieIcfgContainer [2024-11-08 16:53:18,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:53:18,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:53:18,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:53:18,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:53:18,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:53:17" (1/3) ... [2024-11-08 16:53:18,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2550b556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:53:18, skipping insertion in model container [2024-11-08 16:53:18,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:18" (2/3) ... [2024-11-08 16:53:18,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2550b556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:53:18, skipping insertion in model container [2024-11-08 16:53:18,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:18" (3/3) ... [2024-11-08 16:53:18,977 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2024-11-08 16:53:18,996 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:53:18,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:53:19,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:53:19,075 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@259d2c30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:53:19,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:53:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:53:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 16:53:19,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:53:19,092 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:19,094 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:53:19,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1415281768, now seen corresponding path program 1 times [2024-11-08 16:53:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889408878] [2024-11-08 16:53:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:19,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:53:19,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:53:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:53:19,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:53:19,362 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:53:19,364 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 16:53:19,366 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 16:53:19,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:53:19,372 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 16:53:19,406 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:53:19,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:53:19 BoogieIcfgContainer [2024-11-08 16:53:19,409 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:53:19,410 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:53:19,410 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:53:19,410 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:53:19,411 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:18" (3/4) ... [2024-11-08 16:53:19,413 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:53:19,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:53:19,416 INFO L158 Benchmark]: Toolchain (without parser) took 2390.54ms. Allocated memory was 163.6MB in the beginning and 211.8MB in the end (delta: 48.2MB). Free memory was 117.0MB in the beginning and 141.4MB in the end (delta: -24.4MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2024-11-08 16:53:19,418 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 163.6MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:53:19,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1423.96ms. Allocated memory is still 163.6MB. Free memory was 117.0MB in the beginning and 127.0MB in the end (delta: -10.0MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. [2024-11-08 16:53:19,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.72ms. Allocated memory was 163.6MB in the beginning and 211.8MB in the end (delta: 48.2MB). Free memory was 126.9MB in the beginning and 177.0MB in the end (delta: -50.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-11-08 16:53:19,421 INFO L158 Benchmark]: Boogie Preprocessor took 41.02ms. Allocated memory is still 211.8MB. Free memory was 177.0MB in the beginning and 174.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:53:19,422 INFO L158 Benchmark]: RCFGBuilder took 388.55ms. Allocated memory is still 211.8MB. Free memory was 174.9MB in the beginning and 161.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 16:53:19,424 INFO L158 Benchmark]: TraceAbstraction took 439.75ms. Allocated memory is still 211.8MB. Free memory was 160.3MB in the beginning and 141.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 16:53:19,424 INFO L158 Benchmark]: Witness Printer took 5.68ms. Allocated memory is still 211.8MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:53:19,429 INFO L338 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 163.6MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1423.96ms. Allocated memory is still 163.6MB. Free memory was 117.0MB in the beginning and 127.0MB in the end (delta: -10.0MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.72ms. Allocated memory was 163.6MB in the beginning and 211.8MB in the end (delta: 48.2MB). Free memory was 126.9MB in the beginning and 177.0MB in the end (delta: -50.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.02ms. Allocated memory is still 211.8MB. Free memory was 177.0MB in the beginning and 174.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 388.55ms. Allocated memory is still 211.8MB. Free memory was 174.9MB in the beginning and 161.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 439.75ms. Allocated memory is still 211.8MB. Free memory was 160.3MB in the beginning and 141.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.68ms. Allocated memory is still 211.8MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of large string literal at line 1573, overapproximation of fgets at line 1558. 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); [L1548] int CWE191_Integer_Underflow__int_fgets_predec_68_badData; [L1549] int CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData; [L1550] int CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1573] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, 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 CWE191_Integer_Underflow__int_fgets_predec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1567] CWE191_Integer_Underflow__int_fgets_predec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_predec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_predec_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1585] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 16:53:19,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:53:21,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:53:21,987 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-08 16:53:21,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:53:21,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:53:21,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-08 16:53:22,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:53:22,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:53:22,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:53:22,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:53:22,042 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:53:22,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:53:22,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:53:22,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:53:22,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:53:22,044 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:53:22,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:53:22,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:53:22,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:53:22,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:53:22,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:53:22,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:53:22,047 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:53:22,047 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 16:53:22,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:53:22,048 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:53:22,048 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 16:53:22,048 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:53:22,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:53:22,049 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:53:22,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:53:22,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:53:22,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:53:22,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:53:22,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:53:22,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:53:22,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:53:22,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:53:22,053 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 16:53:22,054 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 16:53:22,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:53:22,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:53:22,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:53:22,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:53:22,056 INFO L153 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_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 [2024-11-08 16:53:22,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:53:22,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:53:22,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:53:22,515 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:53:22,516 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:53:22,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i Unable to find full path for "g++" [2024-11-08 16:53:24,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:53:25,061 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:53:25,062 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2024-11-08 16:53:25,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data/381e8141f/fb24087f6bfd48429dd27c9bd6ccf404/FLAGae7c3953f [2024-11-08 16:53:25,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/data/381e8141f/fb24087f6bfd48429dd27c9bd6ccf404 [2024-11-08 16:53:25,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:53:25,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:53:25,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:53:25,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:53:25,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:53:25,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:25" (1/1) ... [2024-11-08 16:53:25,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c3003e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:25, skipping insertion in model container [2024-11-08 16:53:25,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:53:25" (1/1) ... [2024-11-08 16:53:25,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:53:26,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:53:26,363 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:53:26,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:53:26,667 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:53:26,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26 WrapperNode [2024-11-08 16:53:26,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:53:26,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:53:26,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:53:26,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:53:26,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,744 INFO L138 Inliner]: procedures = 504, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-08 16:53:26,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:53:26,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:53:26,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:53:26,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:53:26,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,765 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,781 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-11-08 16:53:26,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:53:26,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:53:26,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:53:26,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:53:26,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (1/1) ... [2024-11-08 16:53:26,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:53:26,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:26,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:53:26,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:53:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 16:53:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 16:53:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 16:53:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:53:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:53:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:53:27,084 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:53:27,087 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:53:27,305 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-08 16:53:27,309 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:53:27,325 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:53:27,326 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:53:27,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:27 BoogieIcfgContainer [2024-11-08 16:53:27,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:53:27,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:53:27,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:53:27,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:53:27,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:53:25" (1/3) ... [2024-11-08 16:53:27,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1d9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:53:27, skipping insertion in model container [2024-11-08 16:53:27,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:53:26" (2/3) ... [2024-11-08 16:53:27,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1d9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:53:27, skipping insertion in model container [2024-11-08 16:53:27,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:27" (3/3) ... [2024-11-08 16:53:27,338 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2024-11-08 16:53:27,356 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:53:27,357 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:53:27,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:53:27,450 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@236a782f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:53:27,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:53:27,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 16:53:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 16:53:27,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:53:27,464 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:53:27,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:53:27,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1415281768, now seen corresponding path program 1 times [2024-11-08 16:53:27,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 16:53:27,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817422573] [2024-11-08 16:53:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:27,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:27,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:27,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:53:27,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:53:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:53:27,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:53:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:53:27,755 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 16:53:27,757 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:53:27,759 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 16:53:27,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 16:53:27,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:53:27,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:27,966 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 16:53:27,990 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:53:27,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:53:27 BoogieIcfgContainer [2024-11-08 16:53:27,993 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:53:27,994 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:53:27,994 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:53:27,994 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:53:27,995 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:53:27" (3/4) ... [2024-11-08 16:53:27,998 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:53:27,999 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:53:28,001 INFO L158 Benchmark]: Toolchain (without parser) took 2888.77ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 65.0MB in the beginning and 82.5MB in the end (delta: -17.4MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2024-11-08 16:53:28,002 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 92.3MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:53:28,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1553.95ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 64.7MB in the beginning and 85.7MB in the end (delta: -20.9MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2024-11-08 16:53:28,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.16ms. Allocated memory is still 134.2MB. Free memory was 85.7MB in the beginning and 82.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:53:28,004 INFO L158 Benchmark]: Boogie Preprocessor took 56.75ms. Allocated memory is still 134.2MB. Free memory was 82.8MB in the beginning and 80.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:53:28,005 INFO L158 Benchmark]: RCFGBuilder took 523.86ms. Allocated memory is still 134.2MB. Free memory was 79.5MB in the beginning and 102.6MB in the end (delta: -23.1MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2024-11-08 16:53:28,005 INFO L158 Benchmark]: TraceAbstraction took 664.45ms. Allocated memory is still 134.2MB. Free memory was 102.1MB in the beginning and 83.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 16:53:28,006 INFO L158 Benchmark]: Witness Printer took 5.59ms. Allocated memory is still 134.2MB. Free memory was 83.3MB in the beginning and 82.5MB in the end (delta: 816.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:53:28,010 INFO L338 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 92.3MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1553.95ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 64.7MB in the beginning and 85.7MB in the end (delta: -20.9MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.16ms. Allocated memory is still 134.2MB. Free memory was 85.7MB in the beginning and 82.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.75ms. Allocated memory is still 134.2MB. Free memory was 82.8MB in the beginning and 80.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 523.86ms. Allocated memory is still 134.2MB. Free memory was 79.5MB in the beginning and 102.6MB in the end (delta: -23.1MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 664.45ms. Allocated memory is still 134.2MB. Free memory was 102.1MB in the beginning and 83.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.59ms. Allocated memory is still 134.2MB. Free memory was 83.3MB in the beginning and 82.5MB in the end (delta: 816.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of large string literal at line 1573, overapproximation of fgets at line 1558. 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); [L1549] int CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData; [L1550] int CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1573] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, 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 CWE191_Integer_Underflow__int_fgets_predec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1567] CWE191_Integer_Underflow__int_fgets_predec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_predec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_predec_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1585] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 16:53:28,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5683f85-804b-476b-aad0-b4a805f70056/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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