./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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 67bfc8ab8a5a59f64f256243a50107eda517afb3be860cf7e0a823090ef09e40 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:09:37,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:09:37,322 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-08 16:09:37,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:09:37,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:09:37,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:09:37,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:09:37,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:09:37,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:09:37,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:09:37,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:09:37,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:09:37,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:09:37,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:09:37,378 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:09:37,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:09:37,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:09:37,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:09:37,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:09:37,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:09:37,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:09:37,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:09:37,386 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:09:37,386 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:09:37,386 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:09:37,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:09:37,387 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:09:37,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:09:37,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:09:37,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:09:37,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:09:37,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:37,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:09:37,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:09:37,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:09:37,391 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:09:37,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:09:37,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:09:37,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:09:37,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:09:37,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:09:37,393 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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bfc8ab8a5a59f64f256243a50107eda517afb3be860cf7e0a823090ef09e40 [2024-11-08 16:09:37,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:09:37,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:09:37,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:09:37,735 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:09:37,736 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:09:37,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i Unable to find full path for "g++" [2024-11-08 16:09:39,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:09:40,078 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:09:40,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i [2024-11-08 16:09:40,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data/af00b3bd7/6315c2b6aabb40168dc8ef49449aab85/FLAG700028fe9 [2024-11-08 16:09:40,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data/af00b3bd7/6315c2b6aabb40168dc8ef49449aab85 [2024-11-08 16:09:40,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:09:40,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:09:40,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:40,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:09:40,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:09:40,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:40" (1/1) ... [2024-11-08 16:09:40,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22591d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:40, skipping insertion in model container [2024-11-08 16:09:40,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:40" (1/1) ... [2024-11-08 16:09:40,335 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:09:41,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:41,325 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:09:41,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:41,606 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:09:41,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41 WrapperNode [2024-11-08 16:09:41,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:41,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:41,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:09:41,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:09:41,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,686 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-11-08 16:09:41,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:41,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:09:41,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:09:41,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:09:41,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,714 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 16:09:41,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:09:41,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:09:41,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:09:41,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:09:41,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (1/1) ... [2024-11-08 16:09:41,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:41,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:41,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:09:41,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:09:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 16:09:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 16:09:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:09:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:09:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:09:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:09:41,965 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:09:41,967 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:09:42,085 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-08 16:09:42,086 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:09:42,098 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:09:42,098 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 16:09:42,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:42 BoogieIcfgContainer [2024-11-08 16:09:42,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:09:42,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:09:42,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:09:42,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:09:42,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:09:40" (1/3) ... [2024-11-08 16:09:42,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb3f285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:42, skipping insertion in model container [2024-11-08 16:09:42,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:41" (2/3) ... [2024-11-08 16:09:42,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb3f285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:42, skipping insertion in model container [2024-11-08 16:09:42,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:42" (3/3) ... [2024-11-08 16:09:42,111 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i [2024-11-08 16:09:42,131 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:09:42,131 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:09:42,186 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:42,193 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;@6fa59415, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:42,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:09:42,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 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 16:09:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 16:09:42,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:42,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:42,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:09:42,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1958583963, now seen corresponding path program 1 times [2024-11-08 16:09:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826587075] [2024-11-08 16:09:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:42,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:09:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:42,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:42,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826587075] [2024-11-08 16:09:42,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826587075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:42,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108385417] [2024-11-08 16:09:42,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:42,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:09:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:09:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:42,521 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 16:09:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:42,540 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-08 16:09:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:09:42,542 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-08 16:09:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:42,550 INFO L225 Difference]: With dead ends: 41 [2024-11-08 16:09:42,550 INFO L226 Difference]: Without dead ends: 18 [2024-11-08 16:09:42,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:42,559 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:42,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:09:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-08 16:09:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-08 16:09:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 16:09:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-08 16:09:42,599 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2024-11-08 16:09:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:42,601 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-08 16:09:42,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 16:09:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-08 16:09:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:09:42,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:42,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:42,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:09:42,605 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:09:42,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1014034784, now seen corresponding path program 1 times [2024-11-08 16:09:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369654413] [2024-11-08 16:09:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:42,669 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:09:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:42,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:09:42,715 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:09:42,717 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 16:09:42,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 16:09:42,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:09:42,724 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 16:09:42,749 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:09:42,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:09:42 BoogieIcfgContainer [2024-11-08 16:09:42,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:09:42,758 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:09:42,758 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:09:42,758 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:09:42,759 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:42" (3/4) ... [2024-11-08 16:09:42,761 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:09:42,763 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:09:42,764 INFO L158 Benchmark]: Toolchain (without parser) took 2520.92ms. Allocated memory is still 161.5MB. Free memory was 126.8MB in the beginning and 70.7MB in the end (delta: 56.1MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. [2024-11-08 16:09:42,765 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 161.5MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:09:42,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1363.25ms. Allocated memory is still 161.5MB. Free memory was 126.3MB in the beginning and 122.0MB in the end (delta: 4.3MB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. [2024-11-08 16:09:42,768 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.68ms. Allocated memory is still 161.5MB. Free memory was 122.0MB in the beginning and 119.4MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:09:42,768 INFO L158 Benchmark]: Boogie Preprocessor took 39.09ms. Allocated memory is still 161.5MB. Free memory was 119.4MB in the beginning and 117.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:09:42,769 INFO L158 Benchmark]: RCFGBuilder took 367.99ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 103.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 16:09:42,769 INFO L158 Benchmark]: TraceAbstraction took 656.57ms. Allocated memory is still 161.5MB. Free memory was 102.7MB in the beginning and 71.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-08 16:09:42,769 INFO L158 Benchmark]: Witness Printer took 5.55ms. Allocated memory is still 161.5MB. Free memory was 71.2MB in the beginning and 70.7MB in the end (delta: 500.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:09:42,774 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 161.5MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1363.25ms. Allocated memory is still 161.5MB. Free memory was 126.3MB in the beginning and 122.0MB in the end (delta: 4.3MB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.68ms. Allocated memory is still 161.5MB. Free memory was 122.0MB in the beginning and 119.4MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.09ms. Allocated memory is still 161.5MB. Free memory was 119.4MB in the beginning and 117.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 367.99ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 103.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 656.57ms. Allocated memory is still 161.5MB. Free memory was 102.7MB in the beginning and 71.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 5.55ms. Allocated memory is still 161.5MB. Free memory was 71.2MB in the beginning and 70.7MB in the end (delta: 500.3kB). 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: 1569]: 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 1578, 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] [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_02_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) [L1569] 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: 1569]: 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, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 28 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 16:09:42,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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 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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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 67bfc8ab8a5a59f64f256243a50107eda517afb3be860cf7e0a823090ef09e40 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:09:45,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:09:45,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-08 16:09:45,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:09:45,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:09:45,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-08 16:09:45,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:09:45,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:09:45,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:09:45,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:09:45,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:09:45,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:09:45,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:09:45,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:09:45,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:09:45,366 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:09:45,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:09:45,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:09:45,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:09:45,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:09:45,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:09:45,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:09:45,371 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:09:45,371 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 16:09:45,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:09:45,372 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:09:45,372 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 16:09:45,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:09:45,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:09:45,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:09:45,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:09:45,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:09:45,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:09:45,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:09:45,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:45,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:09:45,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:09:45,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:09:45,376 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 16:09:45,376 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 16:09:45,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:09:45,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:09:45,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:09:45,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:09:45,390 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_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bfc8ab8a5a59f64f256243a50107eda517afb3be860cf7e0a823090ef09e40 [2024-11-08 16:09:45,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:09:45,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:09:45,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:09:45,816 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:09:45,816 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:09:45,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i Unable to find full path for "g++" [2024-11-08 16:09:47,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:09:48,170 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:09:48,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i [2024-11-08 16:09:48,200 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data/40fc8c0f5/f0ff179b562645b7bb4d7329b7b0c613/FLAG544b3ca41 [2024-11-08 16:09:48,366 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/data/40fc8c0f5/f0ff179b562645b7bb4d7329b7b0c613 [2024-11-08 16:09:48,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:09:48,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:09:48,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:48,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:09:48,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:09:48,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:48" (1/1) ... [2024-11-08 16:09:48,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356294ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:48, skipping insertion in model container [2024-11-08 16:09:48,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:48" (1/1) ... [2024-11-08 16:09:48,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:09:49,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:49,747 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:09:49,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:50,029 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:09:50,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50 WrapperNode [2024-11-08 16:09:50,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:50,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:50,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:09:50,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:09:50,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,105 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-11-08 16:09:50,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:50,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:09:50,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:09:50,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:09:50,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,125 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,154 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 16:09:50,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:09:50,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:09:50,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:09:50,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:09:50,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:50,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:09:50,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:09:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 16:09:50,267 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 16:09:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 16:09:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:09:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:09:50,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:09:50,442 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:09:50,444 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:09:50,622 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-08 16:09:50,622 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:09:50,638 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:09:50,638 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 16:09:50,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:50 BoogieIcfgContainer [2024-11-08 16:09:50,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:09:50,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:09:50,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:09:50,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:09:50,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:09:48" (1/3) ... [2024-11-08 16:09:50,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c113ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:50, skipping insertion in model container [2024-11-08 16:09:50,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50" (2/3) ... [2024-11-08 16:09:50,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c113ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:50, skipping insertion in model container [2024-11-08 16:09:50,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:50" (3/3) ... [2024-11-08 16:09:50,648 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_02_bad.i [2024-11-08 16:09:50,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:09:50,666 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:09:50,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:50,752 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;@49f1ba1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:50,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:09:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 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 16:09:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 16:09:50,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:50,766 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:50,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:09:50,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:50,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1958583963, now seen corresponding path program 1 times [2024-11-08 16:09:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 16:09:50,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910171451] [2024-11-08 16:09:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:50,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:50,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:09:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:50,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 16:09:50,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:50,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:09:50,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 16:09:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910171451] [2024-11-08 16:09:50,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910171451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:50,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:50,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776316394] [2024-11-08 16:09:50,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:50,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:09:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 16:09:51,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:09:51,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:51,026 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 16:09:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:51,047 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-08 16:09:51,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:09:51,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-08 16:09:51,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:51,059 INFO L225 Difference]: With dead ends: 40 [2024-11-08 16:09:51,059 INFO L226 Difference]: Without dead ends: 16 [2024-11-08 16:09:51,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:51,066 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:51,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:09:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-08 16:09:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-08 16:09:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 16:09:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-08 16:09:51,117 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2024-11-08 16:09:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:51,119 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-08 16:09:51,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 16:09:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-08 16:09:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:09:51,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:51,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:51,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:09:51,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:51,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:09:51,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1014034784, now seen corresponding path program 1 times [2024-11-08 16:09:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 16:09:51,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082441858] [2024-11-08 16:09:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:51,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:51,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:51,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:51,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:09:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:51,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:09:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:51,503 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 16:09:51,504 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:09:51,506 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 16:09:51,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 16:09:51,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:09:51,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:51,711 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 16:09:51,730 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:09:51,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:09:51 BoogieIcfgContainer [2024-11-08 16:09:51,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:09:51,734 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:09:51,734 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:09:51,735 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:09:51,735 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:50" (3/4) ... [2024-11-08 16:09:51,737 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:09:51,738 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:09:51,739 INFO L158 Benchmark]: Toolchain (without parser) took 3370.48ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 51.4MB in the beginning and 62.4MB in the end (delta: -11.1MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-11-08 16:09:51,740 INFO L158 Benchmark]: CDTParser took 1.20ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:09:51,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1660.14ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 51.1MB in the beginning and 52.3MB in the end (delta: -1.2MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2024-11-08 16:09:51,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.62ms. Allocated memory is still 104.9MB. Free memory was 52.3MB in the beginning and 49.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:09:51,742 INFO L158 Benchmark]: Boogie Preprocessor took 76.29ms. Allocated memory is still 104.9MB. Free memory was 49.1MB in the beginning and 46.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:09:51,742 INFO L158 Benchmark]: RCFGBuilder took 451.29ms. Allocated memory is still 104.9MB. Free memory was 46.5MB in the beginning and 62.4MB in the end (delta: -15.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2024-11-08 16:09:51,743 INFO L158 Benchmark]: TraceAbstraction took 1092.94ms. Allocated memory is still 104.9MB. Free memory was 61.5MB in the beginning and 62.7MB in the end (delta: -1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:09:51,743 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 62.4MB in the end (delta: 211.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:09:51,746 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1660.14ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 51.1MB in the beginning and 52.3MB in the end (delta: -1.2MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.62ms. Allocated memory is still 104.9MB. Free memory was 52.3MB in the beginning and 49.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.29ms. Allocated memory is still 104.9MB. Free memory was 49.1MB in the beginning and 46.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.29ms. Allocated memory is still 104.9MB. Free memory was 46.5MB in the beginning and 62.4MB in the end (delta: -15.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1092.94ms. Allocated memory is still 104.9MB. Free memory was 61.5MB in the beginning and 62.7MB in the end (delta: -1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 62.4MB in the end (delta: 211.5kB). 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: 1569]: 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 1578, 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] [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_02_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) [L1569] 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: 1569]: 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, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 27 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 16:09:51,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d0fcd0-97a0-4460-8c08-56e6bd797c6e/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