./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_53_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB --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 8f6de09dba1b3f1176ea0a80ce54a3a4cd49d4566091ab5ae868b00cdbb33286 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:09:45,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:09:45,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-28 03:09:45,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:09:45,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:09:45,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:09:45,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:09:45,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:09:45,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:09:45,355 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:09:45,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:09:45,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:09:45,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:09:45,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:09:45,356 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:09:45,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:09:45,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:09:45,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:09:45,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:09:45,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:09:45,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:09:45,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:09:45,357 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:09:45,358 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:09:45,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:09:45,358 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:09:45,358 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:09:45,358 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:09:45,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:09:45,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:09:45,359 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:09:45,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:45,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:09:45,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:09:45,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:09:45,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:09:45,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:45,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:09:45,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:09:45,362 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:09:45,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:09:45,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:09:45,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:09:45,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:09:45,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:09:45,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:09:45,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:09:45,363 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 8f6de09dba1b3f1176ea0a80ce54a3a4cd49d4566091ab5ae868b00cdbb33286 [2024-11-28 03:09:45,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:09:45,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:09:45,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:09:45,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:09:45,733 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:09:45,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_53_bad.i [2024-11-28 03:09:49,306 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/6b1ecc2ea/5e43f2e1e8a645d188a75fcc5e85ebbb/FLAG49bcc52e7 [2024-11-28 03:09:49,892 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:09:49,893 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_53_bad.i [2024-11-28 03:09:49,918 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/6b1ecc2ea/5e43f2e1e8a645d188a75fcc5e85ebbb/FLAG49bcc52e7 [2024-11-28 03:09:49,934 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/6b1ecc2ea/5e43f2e1e8a645d188a75fcc5e85ebbb [2024-11-28 03:09:49,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:09:49,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:09:49,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:09:49,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:09:49,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:09:49,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:49" (1/1) ... [2024-11-28 03:09:49,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97c373c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:49, skipping insertion in model container [2024-11-28 03:09:49,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:49" (1/1) ... [2024-11-28 03:09:49,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:09:51,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:09:51,406 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:09:51,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:09:51,724 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:09:51,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51 WrapperNode [2024-11-28 03:09:51,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:09:51,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:09:51,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:09:51,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:09:51,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,825 INFO L138 Inliner]: procedures = 501, calls = 30, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 67 [2024-11-28 03:09:51,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:09:51,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:09:51,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:09:51,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:09:51,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,878 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]. [2024-11-28 03:09:51,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,889 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:09:51,901 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:09:51,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:09:51,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:09:51,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (1/1) ... [2024-11-28 03:09:51,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:51,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:51,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:09:51,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:09:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-28 03:09:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-28 03:09:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:09:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:09:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:09:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:09:52,211 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:09:52,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:09:52,421 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-28 03:09:52,421 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:09:52,436 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:09:52,436 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:09:52,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:52 BoogieIcfgContainer [2024-11-28 03:09:52,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:09:52,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:09:52,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:09:52,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:09:52,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:09:49" (1/3) ... [2024-11-28 03:09:52,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b483048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:52, skipping insertion in model container [2024-11-28 03:09:52,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:51" (2/3) ... [2024-11-28 03:09:52,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b483048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:52, skipping insertion in model container [2024-11-28 03:09:52,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:52" (3/3) ... [2024-11-28 03:09:52,453 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_53_bad.i [2024-11-28 03:09:52,473 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:09:52,474 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_53_bad.i that has 2 procedures, 25 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-28 03:09:52,555 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:09:52,576 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;@53a3790a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:09:52,576 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:09:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 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) [2024-11-28 03:09:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:09:52,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:52,591 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:52,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-28 03:09:52,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash 290656206, now seen corresponding path program 1 times [2024-11-28 03:09:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:52,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638825312] [2024-11-28 03:09:52,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:09:52,807 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:09:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:09:52,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:09:52,896 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:09:52,899 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-28 03:09:52,901 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-28 03:09:52,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:09:52,906 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 03:09:52,931 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:09:52,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:09:52 BoogieIcfgContainer [2024-11-28 03:09:52,935 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:09:52,936 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:09:52,936 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:09:52,936 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:09:52,937 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:52" (3/4) ... [2024-11-28 03:09:52,940 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 03:09:52,941 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:09:52,943 INFO L158 Benchmark]: Toolchain (without parser) took 3004.97ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 72.5MB in the end (delta: 28.1MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2024-11-28 03:09:52,943 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:09:52,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1786.54ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 40.1MB in the end (delta: 60.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-28 03:09:52,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.66ms. Allocated memory is still 142.6MB. Free memory was 40.1MB in the beginning and 37.4MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:09:52,946 INFO L158 Benchmark]: Boogie Preprocessor took 73.80ms. Allocated memory is still 142.6MB. Free memory was 37.4MB in the beginning and 35.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:09:52,948 INFO L158 Benchmark]: RCFGBuilder took 536.04ms. Allocated memory is still 142.6MB. Free memory was 35.8MB in the beginning and 90.5MB in the end (delta: -54.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-11-28 03:09:52,949 INFO L158 Benchmark]: TraceAbstraction took 495.10ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 73.1MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:09:52,949 INFO L158 Benchmark]: Witness Printer took 5.38ms. Allocated memory is still 142.6MB. Free memory was 73.1MB in the beginning and 72.5MB in the end (delta: 662.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:09:52,953 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1786.54ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 40.1MB in the end (delta: 60.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.66ms. Allocated memory is still 142.6MB. Free memory was 40.1MB in the beginning and 37.4MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.80ms. Allocated memory is still 142.6MB. Free memory was 37.4MB in the beginning and 35.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 536.04ms. Allocated memory is still 142.6MB. Free memory was 35.8MB in the beginning and 90.5MB in the end (delta: -54.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 495.10ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 73.1MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.38ms. Allocated memory is still 142.6MB. Free memory was 73.1MB in the beginning and 72.5MB in the end (delta: 662.4kB). 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: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_53_bad() [L1551] int data; [L1552] data = 0 [L1554] 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] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_53d_badSink(data) [L1587] --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: 1587]: 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: 0.4s, 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=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 03:09:52,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB --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 8f6de09dba1b3f1176ea0a80ce54a3a4cd49d4566091ab5ae868b00cdbb33286 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:09:56,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:09:56,448 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-28 03:09:56,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:09:56,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:09:56,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-28 03:09:56,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:09:56,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:09:56,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:09:56,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:09:56,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:09:56,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:09:56,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:09:56,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:09:56,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:09:56,498 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:09:56,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:09:56,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:09:56,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:09:56,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:09:56,500 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:09:56,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:09:56,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:09:56,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:09:56,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:56,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:09:56,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:09:56,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:09:56,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:09:56,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:56,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:09:56,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:09:56,503 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:09:56,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:09:56,504 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:09:56,504 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:09:56,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:09:56,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:09:56,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:09:56,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:09:56,505 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 8f6de09dba1b3f1176ea0a80ce54a3a4cd49d4566091ab5ae868b00cdbb33286 [2024-11-28 03:09:56,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:09:56,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:09:56,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:09:56,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:09:56,911 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:09:56,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_53_bad.i [2024-11-28 03:10:00,534 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/34b00dad1/8de5d7853a4547dbaea8b17c1e662433/FLAG247a1edbc [2024-11-28 03:10:01,038 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:10:01,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_53_bad.i [2024-11-28 03:10:01,069 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/34b00dad1/8de5d7853a4547dbaea8b17c1e662433/FLAG247a1edbc [2024-11-28 03:10:01,088 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/data/34b00dad1/8de5d7853a4547dbaea8b17c1e662433 [2024-11-28 03:10:01,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:10:01,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:10:01,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:10:01,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:10:01,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:10:01,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:01" (1/1) ... [2024-11-28 03:10:01,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2a5991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:01, skipping insertion in model container [2024-11-28 03:10:01,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:01" (1/1) ... [2024-11-28 03:10:01,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:10:02,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:10:02,390 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:10:02,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:10:02,763 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:10:02,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02 WrapperNode [2024-11-28 03:10:02,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:10:02,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:10:02,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:10:02,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:10:02,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,865 INFO L138 Inliner]: procedures = 506, calls = 30, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 66 [2024-11-28 03:10:02,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:10:02,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:10:02,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:10:02,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:10:02,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,890 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,925 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]. [2024-11-28 03:10:02,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,944 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:10:02,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:10:02,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:10:02,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:10:02,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (1/1) ... [2024-11-28 03:10:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:10:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:03,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:10:03,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:10:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-28 03:10:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-28 03:10:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:10:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:10:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:10:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:10:03,322 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:10:03,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:10:03,581 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-28 03:10:03,581 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:10:03,597 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:10:03,598 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:10:03,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:03 BoogieIcfgContainer [2024-11-28 03:10:03,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:10:03,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:10:03,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:10:03,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:10:03,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:01" (1/3) ... [2024-11-28 03:10:03,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154a3a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:03, skipping insertion in model container [2024-11-28 03:10:03,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:02" (2/3) ... [2024-11-28 03:10:03,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154a3a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:03, skipping insertion in model container [2024-11-28 03:10:03,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:03" (3/3) ... [2024-11-28 03:10:03,633 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_53_bad.i [2024-11-28 03:10:03,659 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:10:03,661 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_53_bad.i that has 2 procedures, 25 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-28 03:10:03,749 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:10:03,769 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;@67932313, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:10:03,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:10:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 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) [2024-11-28 03:10:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:10:03,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:10:03,785 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:03,786 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-28 03:10:03,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash 290656206, now seen corresponding path program 1 times [2024-11-28 03:10:03,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:10:03,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440666145] [2024-11-28 03:10:03,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:03,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:03,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:03,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:10:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:10:04,002 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:10:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:10:04,073 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 03:10:04,075 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:10:04,076 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-28 03:10:04,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-28 03:10:04,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:10:04,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:04,285 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 03:10:04,317 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:10:04,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:04 BoogieIcfgContainer [2024-11-28 03:10:04,323 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:10:04,324 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:10:04,324 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:10:04,324 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:10:04,325 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:03" (3/4) ... [2024-11-28 03:10:04,328 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 03:10:04,329 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:10:04,331 INFO L158 Benchmark]: Toolchain (without parser) took 3237.66ms. Allocated memory is still 83.9MB. Free memory was 56.8MB in the beginning and 36.6MB in the end (delta: 20.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-11-28 03:10:04,332 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:04,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1670.52ms. Allocated memory is still 83.9MB. Free memory was 56.8MB in the beginning and 48.6MB in the end (delta: 8.2MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2024-11-28 03:10:04,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.68ms. Allocated memory is still 83.9MB. Free memory was 48.6MB in the beginning and 45.5MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:04,334 INFO L158 Benchmark]: Boogie Preprocessor took 90.96ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 43.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:10:04,335 INFO L158 Benchmark]: RCFGBuilder took 642.15ms. Allocated memory is still 83.9MB. Free memory was 43.6MB in the beginning and 29.8MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:10:04,337 INFO L158 Benchmark]: TraceAbstraction took 719.61ms. Allocated memory is still 83.9MB. Free memory was 29.4MB in the beginning and 36.6MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:04,338 INFO L158 Benchmark]: Witness Printer took 5.53ms. Allocated memory is still 83.9MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:04,339 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1670.52ms. Allocated memory is still 83.9MB. Free memory was 56.8MB in the beginning and 48.6MB in the end (delta: 8.2MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.68ms. Allocated memory is still 83.9MB. Free memory was 48.6MB in the beginning and 45.5MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 90.96ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 43.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 642.15ms. Allocated memory is still 83.9MB. Free memory was 43.6MB in the beginning and 29.8MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 719.61ms. Allocated memory is still 83.9MB. Free memory was 29.4MB in the beginning and 36.6MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.53ms. Allocated memory is still 83.9MB. Free memory is still 36.6MB. 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: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_53_bad() [L1551] int data; [L1552] data = 0 [L1554] 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] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_53d_badSink(data) [L1587] --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: 1587]: 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: 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=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 03:10:04,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902747b3-bc5f-41db-a249-35ba3cf501fc/bin/uautomizer-verify-aQ6SnzHsRB/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