./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:49:55,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:49:55,154 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-08 18:49:55,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:49:55,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:49:55,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:49:55,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:49:55,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:49:55,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:49:55,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:49:55,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:49:55,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:49:55,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:49:55,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:49:55,210 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:49:55,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:49:55,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:49:55,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:49:55,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:49:55,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:49:55,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:49:55,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:49:55,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:49:55,219 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:49:55,219 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:49:55,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:49:55,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:49:55,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:49:55,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:49:55,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:49:55,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:49:55,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:49:55,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:49:55,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:49:55,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:49:55,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:49:55,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:49:55,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:49:55,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:49:55,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:49:55,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:49:55,230 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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb [2024-11-08 18:49:55,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:49:55,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:49:55,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:49:55,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:49:55,623 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:49:55,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i Unable to find full path for "g++" [2024-11-08 18:49:58,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:49:58,488 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:49:58,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2024-11-08 18:49:58,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data/cfb8640c5/ad428a85ea1b4729aae9d0fbe5442250/FLAGdae0f80cd [2024-11-08 18:49:58,693 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data/cfb8640c5/ad428a85ea1b4729aae9d0fbe5442250 [2024-11-08 18:49:58,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:49:58,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:49:58,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:49:58,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:49:58,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:49:58,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:49:58" (1/1) ... [2024-11-08 18:49:58,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a29a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:49:58, skipping insertion in model container [2024-11-08 18:49:58,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:49:58" (1/1) ... [2024-11-08 18:49:58,817 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:50:00,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:00,383 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:50:00,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:00,713 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:50:00,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00 WrapperNode [2024-11-08 18:50:00,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:00,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:00,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:50:00,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:50:00,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,807 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-08 18:50:00,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:00,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:50:00,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:50:00,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:50:00,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,885 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 18:50:00,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:50:00,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:50:00,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:50:00,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:50:00,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (1/1) ... [2024-11-08 18:50:00,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:00,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:00,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:50:00,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:50:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 18:50:01,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 18:50:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:50:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:50:01,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:50:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:50:01,219 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:50:01,225 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:50:01,443 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-08 18:50:01,447 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:50:01,468 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:50:01,469 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:50:01,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:01 BoogieIcfgContainer [2024-11-08 18:50:01,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:50:01,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:50:01,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:50:01,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:50:01,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:49:58" (1/3) ... [2024-11-08 18:50:01,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4912f276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:01, skipping insertion in model container [2024-11-08 18:50:01,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:00" (2/3) ... [2024-11-08 18:50:01,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4912f276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:01, skipping insertion in model container [2024-11-08 18:50:01,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:01" (3/3) ... [2024-11-08 18:50:01,483 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2024-11-08 18:50:01,508 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:50:01,508 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:50:01,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:50:01,618 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;@14d38bf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:50:01,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:50:01,629 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 18:50:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 18:50:01,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:01,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:01,642 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:50:01,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:01,652 INFO L85 PathProgramCache]: Analyzing trace with hash 756143915, now seen corresponding path program 1 times [2024-11-08 18:50:01,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687879683] [2024-11-08 18:50:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:01,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:50:01,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:50:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:50:02,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:50:02,012 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:50:02,013 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 18:50:02,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 18:50:02,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:50:02,023 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 18:50:02,062 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:50:02,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:50:02 BoogieIcfgContainer [2024-11-08 18:50:02,068 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:50:02,069 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:50:02,069 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:50:02,069 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:50:02,070 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:01" (3/4) ... [2024-11-08 18:50:02,075 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 18:50:02,077 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:50:02,079 INFO L158 Benchmark]: Toolchain (without parser) took 3377.01ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 92.3MB in the beginning and 108.4MB in the end (delta: -16.2MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2024-11-08 18:50:02,080 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 138.4MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:50:02,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2007.32ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 92.1MB in the beginning and 99.2MB in the end (delta: -7.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-08 18:50:02,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.72ms. Allocated memory is still 176.2MB. Free memory was 99.2MB in the beginning and 96.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:50:02,083 INFO L158 Benchmark]: Boogie Preprocessor took 104.43ms. Allocated memory is still 176.2MB. Free memory was 96.5MB in the beginning and 142.0MB in the end (delta: -45.5MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-11-08 18:50:02,086 INFO L158 Benchmark]: RCFGBuilder took 554.06ms. Allocated memory is still 176.2MB. Free memory was 142.0MB in the beginning and 128.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 18:50:02,086 INFO L158 Benchmark]: TraceAbstraction took 593.75ms. Allocated memory is still 176.2MB. Free memory was 127.3MB in the beginning and 109.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 18:50:02,087 INFO L158 Benchmark]: Witness Printer took 8.59ms. Allocated memory is still 176.2MB. Free memory was 109.4MB in the beginning and 108.4MB in the end (delta: 964.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:50:02,094 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 138.4MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2007.32ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 92.1MB in the beginning and 99.2MB in the end (delta: -7.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.72ms. Allocated memory is still 176.2MB. Free memory was 99.2MB in the beginning and 96.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.43ms. Allocated memory is still 176.2MB. Free memory was 96.5MB in the beginning and 142.0MB in the end (delta: -45.5MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * RCFGBuilder took 554.06ms. Allocated memory is still 176.2MB. Free memory was 142.0MB in the beginning and 128.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 593.75ms. Allocated memory is still 176.2MB. Free memory was 127.3MB in the beginning and 109.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 8.59ms. Allocated memory is still 176.2MB. Free memory was 109.4MB in the beginning and 108.4MB in the end (delta: 964.4kB). 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1576, overapproximation of fgets at line 1556. 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] [L1576] CALL printLine("Calling bad()...") VAL [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) [L1576] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_18_bad() [L1550] int data; [L1551] data = 0 VAL [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] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] --data VAL [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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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 18:50:02,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:50:05,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:50:05,378 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-08 18:50:05,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:50:05,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:50:05,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-08 18:50:05,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:50:05,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:50:05,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:50:05,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:50:05,445 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:50:05,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:50:05,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:50:05,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:50:05,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:50:05,449 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:50:05,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:50:05,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:50:05,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:50:05,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:50:05,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:50:05,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:50:05,457 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:50:05,458 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 18:50:05,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:50:05,458 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:50:05,459 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 18:50:05,459 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:50:05,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:50:05,460 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:50:05,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:50:05,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:50:05,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:50:05,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:50:05,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:05,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:50:05,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:50:05,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:50:05,465 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 18:50:05,465 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 18:50:05,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:50:05,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:50:05,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:50:05,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:50:05,468 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_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb [2024-11-08 18:50:05,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:50:06,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:50:06,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:50:06,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:50:06,016 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:50:06,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i Unable to find full path for "g++" [2024-11-08 18:50:08,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:50:08,958 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:50:08,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2024-11-08 18:50:09,008 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data/b61836d2e/a693064e3d084f6e91fd87fc9002a8b3/FLAG67d21ffd8 [2024-11-08 18:50:09,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/data/b61836d2e/a693064e3d084f6e91fd87fc9002a8b3 [2024-11-08 18:50:09,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:50:09,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:50:09,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:09,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:50:09,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:50:09,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:09" (1/1) ... [2024-11-08 18:50:09,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489fa629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:09, skipping insertion in model container [2024-11-08 18:50:09,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:09" (1/1) ... [2024-11-08 18:50:09,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:50:10,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:10,346 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:50:10,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:10,621 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:50:10,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10 WrapperNode [2024-11-08 18:50:10,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:10,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:10,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:50:10,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:50:10,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,706 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-08 18:50:10,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:10,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:50:10,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:50:10,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:50:10,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,740 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 18:50:10,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:50:10,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:50:10,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:50:10,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:50:10,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (1/1) ... [2024-11-08 18:50:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:10,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:10,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:50:10,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:50:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 18:50:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 18:50:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 18:50:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:50:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:50:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:50:11,009 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:50:11,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:50:11,206 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-08 18:50:11,206 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:50:11,221 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:50:11,222 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:50:11,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:11 BoogieIcfgContainer [2024-11-08 18:50:11,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:50:11,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:50:11,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:50:11,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:50:11,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:50:09" (1/3) ... [2024-11-08 18:50:11,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6298b01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:11, skipping insertion in model container [2024-11-08 18:50:11,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:10" (2/3) ... [2024-11-08 18:50:11,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6298b01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:11, skipping insertion in model container [2024-11-08 18:50:11,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:11" (3/3) ... [2024-11-08 18:50:11,232 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2024-11-08 18:50:11,252 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:50:11,252 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:50:11,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:50:11,341 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;@1f07a920, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:50:11,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:50:11,347 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 18:50:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 18:50:11,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:50:11,358 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:11,358 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:50:11,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash 756143915, now seen corresponding path program 1 times [2024-11-08 18:50:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:50:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641913826] [2024-11-08 18:50:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:11,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:11,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:11,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:11,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:50:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:50:11,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:50:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:50:11,645 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 18:50:11,647 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:50:11,648 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 18:50:11,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 18:50:11,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:50:11,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:11,855 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 18:50:11,877 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:50:11,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:50:11 BoogieIcfgContainer [2024-11-08 18:50:11,880 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:50:11,881 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:50:11,881 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:50:11,881 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:50:11,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:11" (3/4) ... [2024-11-08 18:50:11,886 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 18:50:11,887 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:50:11,888 INFO L158 Benchmark]: Toolchain (without parser) took 2847.33ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 46.0MB in the beginning and 70.6MB in the end (delta: -24.6MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-11-08 18:50:11,889 INFO L158 Benchmark]: CDTParser took 1.56ms. Allocated memory is still 73.4MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:50:11,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1578.74ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 45.8MB in the beginning and 52.1MB in the end (delta: -6.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2024-11-08 18:50:11,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.58ms. Allocated memory is still 107.0MB. Free memory was 52.1MB in the beginning and 77.6MB in the end (delta: -25.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2024-11-08 18:50:11,891 INFO L158 Benchmark]: Boogie Preprocessor took 47.88ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 74.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 18:50:11,892 INFO L158 Benchmark]: RCFGBuilder took 463.71ms. Allocated memory is still 107.0MB. Free memory was 74.7MB in the beginning and 60.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 18:50:11,892 INFO L158 Benchmark]: TraceAbstraction took 656.38ms. Allocated memory is still 107.0MB. Free memory was 59.4MB in the beginning and 70.6MB in the end (delta: -11.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:50:11,893 INFO L158 Benchmark]: Witness Printer took 5.91ms. Allocated memory is still 107.0MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:50:11,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.56ms. Allocated memory is still 73.4MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1578.74ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 45.8MB in the beginning and 52.1MB in the end (delta: -6.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.58ms. Allocated memory is still 107.0MB. Free memory was 52.1MB in the beginning and 77.6MB in the end (delta: -25.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.88ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 74.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 463.71ms. Allocated memory is still 107.0MB. Free memory was 74.7MB in the beginning and 60.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 656.38ms. Allocated memory is still 107.0MB. Free memory was 59.4MB in the beginning and 70.6MB in the end (delta: -11.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.91ms. Allocated memory is still 107.0MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1576, overapproximation of fgets at line 1556. 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] [L1576] CALL printLine("Calling bad()...") VAL [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) [L1576] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_18_bad() [L1550] int data; [L1551] data = 0 VAL [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] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] --data VAL [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: 1568]: 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, 12 NumberOfCodeBlocks, 12 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 18:50:11,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d36e9aa-0ea7-4fb2-a8c9-a3f39e66f685/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample