./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_16_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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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 19f771f105ae7d9054a8f880602bab6c07dc6a2f5208d8e293e172fe35f168aa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:25:47,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:25:47,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-27 23:25:47,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:25:47,264 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:25:47,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:25:47,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:25:47,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:25:47,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:25:47,309 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:25:47,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:25:47,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:25:47,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:25:47,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:25:47,312 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:25:47,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:25:47,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:25:47,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:25:47,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:25:47,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:25:47,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:25:47,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:25:47,314 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:25:47,314 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:25:47,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:25:47,314 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:25:47,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:25:47,315 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:25:47,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:47,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:47,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:47,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:47,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:25:47,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:47,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:47,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:47,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:47,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:25:47,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:25:47,317 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:25:47,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:25:47,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:25:47,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:25:47,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:25:47,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:25:47,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:25:47,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:25:47,318 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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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 -> 19f771f105ae7d9054a8f880602bab6c07dc6a2f5208d8e293e172fe35f168aa [2024-11-27 23:25:47,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:25:47,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:25:47,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:25:47,704 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:25:47,704 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:25:47,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_16_bad.i [2024-11-27 23:25:51,327 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/cb42b3001/4cbcfd3e604e4f49be1fd5f6664f9224/FLAG2b8cf7e26 [2024-11-27 23:25:51,879 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:25:51,880 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_16_bad.i [2024-11-27 23:25:51,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/cb42b3001/4cbcfd3e604e4f49be1fd5f6664f9224/FLAG2b8cf7e26 [2024-11-27 23:25:51,924 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/cb42b3001/4cbcfd3e604e4f49be1fd5f6664f9224 [2024-11-27 23:25:51,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:25:51,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:25:51,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:51,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:25:51,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:25:51,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:51" (1/1) ... [2024-11-27 23:25:51,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547e6a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:51, skipping insertion in model container [2024-11-27 23:25:51,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:51" (1/1) ... [2024-11-27 23:25:52,005 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:25:53,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:53,194 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:25:53,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:53,528 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:25:53,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53 WrapperNode [2024-11-27 23:25:53,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:53,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:53,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:25:53,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:25:53,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,591 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-11-27 23:25:53,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:53,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:25:53,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:25:53,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:25:53,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,624 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]. [2024-11-27 23:25:53,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,630 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:25:53,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:25:53,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:25:53,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:25:53,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (1/1) ... [2024-11-27 23:25:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:53,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:53,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:25:53,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:25:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-27 23:25:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-27 23:25:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:25:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:25:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:25:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:25:53,876 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:25:53,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:25:54,038 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-27 23:25:54,038 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:25:54,050 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:25:54,050 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:25:54,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:54 BoogieIcfgContainer [2024-11-27 23:25:54,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:25:54,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:25:54,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:25:54,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:25:54,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:25:51" (1/3) ... [2024-11-27 23:25:54,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf90ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:54, skipping insertion in model container [2024-11-27 23:25:54,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:53" (2/3) ... [2024-11-27 23:25:54,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf90ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:54, skipping insertion in model container [2024-11-27 23:25:54,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:54" (3/3) ... [2024-11-27 23:25:54,063 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_16_bad.i [2024-11-27 23:25:54,089 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:25:54,090 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_16_bad.i that has 2 procedures, 23 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 23:25:54,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:25:54,188 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;@456aff35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:25:54,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 23:25:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.5) internal successors, (24), 19 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) [2024-11-27 23:25:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:25:54,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:54,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:54,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-27 23:25:54,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1490552921, now seen corresponding path program 1 times [2024-11-27 23:25:54,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595916020] [2024-11-27 23:25:54,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:54,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:54,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595916020] [2024-11-27 23:25:54,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595916020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:54,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:54,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:25:54,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103268245] [2024-11-27 23:25:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:54,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:25:54,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:54,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:25:54,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:25:54,461 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.5) internal successors, (24), 19 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-27 23:25:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:54,477 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2024-11-27 23:25:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:25:54,479 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10 [2024-11-27 23:25:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:54,485 INFO L225 Difference]: With dead ends: 38 [2024-11-27 23:25:54,485 INFO L226 Difference]: Without dead ends: 16 [2024-11-27 23:25:54,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:25:54,491 INFO L435 NwaCegarLoop]: 26 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, 26 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 [2024-11-27 23:25:54,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-27 23:25:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-27 23:25:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 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) [2024-11-27 23:25:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-27 23:25:54,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2024-11-27 23:25:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:54,524 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-27 23:25:54,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-27 23:25:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-27 23:25:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:25:54,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:54,526 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:54,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:25:54,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-27 23:25:54,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2097674638, now seen corresponding path program 1 times [2024-11-27 23:25:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:54,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842827197] [2024-11-27 23:25:54,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:54,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:25:54,576 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:25:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:25:54,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:25:54,642 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:25:54,644 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-27 23:25:54,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-27 23:25:54,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:25:54,649 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-27 23:25:54,671 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:25:54,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:25:54 BoogieIcfgContainer [2024-11-27 23:25:54,676 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:25:54,677 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:25:54,677 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:25:54,677 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:25:54,678 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:54" (3/4) ... [2024-11-27 23:25:54,680 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 23:25:54,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:25:54,682 INFO L158 Benchmark]: Toolchain (without parser) took 2753.73ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 36.5MB in the end (delta: 52.2MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2024-11-27 23:25:54,682 INFO L158 Benchmark]: CDTParser took 3.01ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:54,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1598.71ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 80.1MB in the end (delta: 8.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2024-11-27 23:25:54,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.84ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:54,683 INFO L158 Benchmark]: Boogie Preprocessor took 48.07ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 75.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:54,684 INFO L158 Benchmark]: RCFGBuilder took 409.57ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 63.3MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:25:54,684 INFO L158 Benchmark]: TraceAbstraction took 623.44ms. Allocated memory is still 117.4MB. Free memory was 62.8MB in the beginning and 37.0MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 23:25:54,684 INFO L158 Benchmark]: Witness Printer took 3.77ms. Allocated memory is still 117.4MB. Free memory was 37.0MB in the beginning and 36.5MB in the end (delta: 536.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:54,686 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.01ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1598.71ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 80.1MB in the end (delta: 8.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.84ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.07ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 75.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 409.57ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 63.3MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 623.44ms. Allocated memory is still 117.4MB. Free memory was 62.8MB in the beginning and 37.0MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.77ms. Allocated memory is still 117.4MB. Free memory was 37.0MB in the beginning and 36.5MB in the end (delta: 536.6kB). 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: 1570]: 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 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] [L1580] 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) [L1580] 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] [L1581] CALL CWE191_Integer_Underflow__int_fgets_predec_16_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) [L1570] --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: 1570]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 26 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, 26 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 23:25:54,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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 19f771f105ae7d9054a8f880602bab6c07dc6a2f5208d8e293e172fe35f168aa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:25:57,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:25:57,898 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-27 23:25:57,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:25:57,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:25:57,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-27 23:25:57,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:25:57,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:25:57,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:25:57,968 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:25:57,969 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:25:57,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:25:57,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:25:57,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:25:57,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:25:57,970 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:25:57,971 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:57,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:57,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:57,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:57,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:25:57,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:57,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:57,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:57,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:57,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:25:57,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:25:57,975 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:25:57,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:25:57,976 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:25:57,976 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:25:57,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:25:57,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:25:57,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:25:57,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:25:57,977 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_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/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 -> 19f771f105ae7d9054a8f880602bab6c07dc6a2f5208d8e293e172fe35f168aa [2024-11-27 23:25:58,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:25:58,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:25:58,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:25:58,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:25:58,372 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:25:58,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_16_bad.i [2024-11-27 23:26:02,156 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/76d106993/db0bb59fda114e95a024ec7dc5bc0f8a/FLAGd15a5257e [2024-11-27 23:26:02,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:26:02,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_16_bad.i [2024-11-27 23:26:02,770 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/76d106993/db0bb59fda114e95a024ec7dc5bc0f8a/FLAGd15a5257e [2024-11-27 23:26:02,790 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/data/76d106993/db0bb59fda114e95a024ec7dc5bc0f8a [2024-11-27 23:26:02,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:26:02,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:26:02,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:26:02,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:26:02,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:26:02,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:26:02" (1/1) ... [2024-11-27 23:26:02,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6559aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:02, skipping insertion in model container [2024-11-27 23:26:02,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:26:02" (1/1) ... [2024-11-27 23:26:02,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:26:04,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:26:04,024 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:26:04,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:26:04,421 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:26:04,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04 WrapperNode [2024-11-27 23:26:04,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:26:04,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:26:04,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:26:04,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:26:04,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,488 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-11-27 23:26:04,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:26:04,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:26:04,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:26:04,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:26:04,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,549 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]. [2024-11-27 23:26:04,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:26:04,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:26:04,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:26:04,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:26:04,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (1/1) ... [2024-11-27 23:26:04,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:26:04,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:04,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:26:04,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:26:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-27 23:26:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-27 23:26:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 23:26:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:26:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:26:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:26:04,927 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:26:04,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:26:05,163 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-27 23:26:05,163 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:26:05,178 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:26:05,179 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:26:05,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:26:05 BoogieIcfgContainer [2024-11-27 23:26:05,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:26:05,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:26:05,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:26:05,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:26:05,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:26:02" (1/3) ... [2024-11-27 23:26:05,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d0dca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:26:05, skipping insertion in model container [2024-11-27 23:26:05,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:04" (2/3) ... [2024-11-27 23:26:05,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d0dca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:26:05, skipping insertion in model container [2024-11-27 23:26:05,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:26:05" (3/3) ... [2024-11-27 23:26:05,196 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_16_bad.i [2024-11-27 23:26:05,217 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:26:05,219 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_16_bad.i that has 2 procedures, 23 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 23:26:05,298 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:26:05,316 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;@b740a13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:26:05,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 23:26:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.5) internal successors, (24), 19 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) [2024-11-27 23:26:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:26:05,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:05,330 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:05,331 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-27 23:26:05,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1490552921, now seen corresponding path program 1 times [2024-11-27 23:26:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:26:05,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756586545] [2024-11-27 23:26:05,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:05,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:05,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:26:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:05,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:26:05,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:05,652 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:26:05,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:26:05,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756586545] [2024-11-27 23:26:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756586545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:26:05,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794764771] [2024-11-27 23:26:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:05,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:26:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:26:05,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:26:05,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:26:05,695 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.5) internal successors, (24), 19 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-27 23:26:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:05,717 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2024-11-27 23:26:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:26:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10 [2024-11-27 23:26:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:05,727 INFO L225 Difference]: With dead ends: 37 [2024-11-27 23:26:05,728 INFO L226 Difference]: Without dead ends: 14 [2024-11-27 23:26:05,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:26:05,736 INFO L435 NwaCegarLoop]: 25 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, 25 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 [2024-11-27 23:26:05,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-27 23:26:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-27 23:26:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-11-27 23:26:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-27 23:26:05,786 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2024-11-27 23:26:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:05,788 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-27 23:26:05,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-27 23:26:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-27 23:26:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:26:05,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:05,792 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:05,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:26:05,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:05,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-27 23:26:05,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2097674638, now seen corresponding path program 1 times [2024-11-27 23:26:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:26:05,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390409398] [2024-11-27 23:26:05,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:05,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:05,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:06,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:06,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:26:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:26:06,164 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:26:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:26:06,220 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-27 23:26:06,221 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:26:06,223 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-27 23:26:06,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-27 23:26:06,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:26:06,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:06,429 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-27 23:26:06,465 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:26:06,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:26:06 BoogieIcfgContainer [2024-11-27 23:26:06,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:26:06,471 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:26:06,471 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:26:06,471 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:26:06,472 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:26:05" (3/4) ... [2024-11-27 23:26:06,475 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 23:26:06,476 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:26:06,477 INFO L158 Benchmark]: Toolchain (without parser) took 3681.45ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 88.7MB in the beginning and 221.2MB in the end (delta: -132.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2024-11-27 23:26:06,477 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 117.4MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:26:06,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1625.59ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 66.7MB in the end (delta: 22.0MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2024-11-27 23:26:06,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.58ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 63.9MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:26:06,482 INFO L158 Benchmark]: Boogie Preprocessor took 83.49ms. Allocated memory is still 117.4MB. Free memory was 63.9MB in the beginning and 61.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:26:06,482 INFO L158 Benchmark]: RCFGBuilder took 607.06ms. Allocated memory is still 117.4MB. Free memory was 61.3MB in the beginning and 47.9MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:26:06,483 INFO L158 Benchmark]: TraceAbstraction took 1287.53ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 47.4MB in the beginning and 221.9MB in the end (delta: -174.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:26:06,483 INFO L158 Benchmark]: Witness Printer took 5.47ms. Allocated memory is still 268.4MB. Free memory was 221.9MB in the beginning and 221.2MB in the end (delta: 687.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:26:06,486 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 117.4MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1625.59ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 66.7MB in the end (delta: 22.0MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.58ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 63.9MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 83.49ms. Allocated memory is still 117.4MB. Free memory was 63.9MB in the beginning and 61.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 607.06ms. Allocated memory is still 117.4MB. Free memory was 61.3MB in the beginning and 47.9MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1287.53ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 47.4MB in the beginning and 221.9MB in the end (delta: -174.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.47ms. Allocated memory is still 268.4MB. Free memory was 221.9MB in the beginning and 221.2MB in the end (delta: 687.1kB). Peak memory consumption was 8.4MB. 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: 1570]: 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 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] [L1580] 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) [L1580] 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] [L1581] CALL CWE191_Integer_Underflow__int_fgets_predec_16_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) [L1570] --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: 1570]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, 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, 25 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, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 39 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 23:26:06,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ca3958-79e2-4ca4-8e23-a62ebcb3e302/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample