./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC --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 ffc1d4ff5146147535a8cadfa3671cd765ae4ddcb2dacc7af945329a570780ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:38:23,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:38:23,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-23 22:38:23,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:38:23,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:38:23,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:38:23,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:38:23,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:38:23,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:38:23,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:38:23,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:38:23,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:38:23,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:38:23,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:38:23,210 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:38:23,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:38:23,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:38:23,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:38:23,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:38:23,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:38:23,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:38:23,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:38:23,214 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 22:38:23,214 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:38:23,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:38:23,214 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:38:23,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:38:23,214 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:38:23,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:38:23,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:38:23,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:38:23,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:38:23,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:38:23,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:38:23,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:38:23,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:38:23,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:38:23,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:38:23,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:38:23,218 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:38:23,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:38:23,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:38:23,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:38:23,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:38:23,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:38:23,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:38:23,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:38:23,219 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_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC 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 -> ffc1d4ff5146147535a8cadfa3671cd765ae4ddcb2dacc7af945329a570780ea [2024-11-23 22:38:23,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:38:23,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:38:23,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:38:23,645 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:38:23,646 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:38:23,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i [2024-11-23 22:38:27,010 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/6d4bbb765/4e2bb920995745bc9f63439b5101d3b3/FLAG6eafe4cb7 [2024-11-23 22:38:27,453 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:38:27,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i [2024-11-23 22:38:27,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/6d4bbb765/4e2bb920995745bc9f63439b5101d3b3/FLAG6eafe4cb7 [2024-11-23 22:38:27,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/6d4bbb765/4e2bb920995745bc9f63439b5101d3b3 [2024-11-23 22:38:27,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:38:27,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:38:27,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:38:27,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:38:27,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:38:27,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:27" (1/1) ... [2024-11-23 22:38:27,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f50433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:27, skipping insertion in model container [2024-11-23 22:38:27,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:27" (1/1) ... [2024-11-23 22:38:27,630 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:38:28,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:38:28,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:38:28,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:38:29,116 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:38:29,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29 WrapperNode [2024-11-23 22:38:29,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:38:29,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:38:29,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:38:29,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:38:29,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,208 INFO L138 Inliner]: procedures = 498, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-11-23 22:38:29,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:38:29,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:38:29,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:38:29,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:38:29,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,260 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]. [2024-11-23 22:38:29,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,273 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:38:29,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:38:29,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:38:29,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:38:29,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (1/1) ... [2024-11-23 22:38:29,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:38:29,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:38:29,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:38:29,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:38:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-23 22:38:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-23 22:38:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrue [2024-11-23 22:38:29,381 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrue [2024-11-23 22:38:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:38:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:38:29,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:38:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:38:29,592 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:38:29,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:38:29,750 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-23 22:38:29,750 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:38:29,762 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:38:29,762 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 22:38:29,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:29 BoogieIcfgContainer [2024-11-23 22:38:29,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:38:29,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:38:29,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:38:29,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:38:29,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:38:27" (1/3) ... [2024-11-23 22:38:29,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365408dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:38:29, skipping insertion in model container [2024-11-23 22:38:29,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:29" (2/3) ... [2024-11-23 22:38:29,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365408dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:38:29, skipping insertion in model container [2024-11-23 22:38:29,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:29" (3/3) ... [2024-11-23 22:38:29,777 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i [2024-11-23 22:38:29,794 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:38:29,795 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i that has 3 procedures, 32 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 22:38:29,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:38:29,887 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;@1728c1be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:38:29,887 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 22:38:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-23 22:38:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-23 22:38:29,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:29,902 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:29,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 22:38:29,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1811171087, now seen corresponding path program 1 times [2024-11-23 22:38:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:29,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699259492] [2024-11-23 22:38:29,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:29,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:38:30,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699259492] [2024-11-23 22:38:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699259492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820899384] [2024-11-23 22:38:30,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:30,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:30,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:38:30,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:38:30,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:38:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:30,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:38:30,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:38:30,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820899384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:30,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:38:30,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-23 22:38:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153226822] [2024-11-23 22:38:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:30,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:38:30,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:30,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:38:30,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:38:30,751 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 22:38:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:30,804 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-23 22:38:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:38:30,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-11-23 22:38:30,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:30,817 INFO L225 Difference]: With dead ends: 53 [2024-11-23 22:38:30,817 INFO L226 Difference]: Without dead ends: 24 [2024-11-23 22:38:30,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:38:30,824 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:30,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 69 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:38:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-23 22:38:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-23 22:38:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 22:38:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-23 22:38:30,905 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2024-11-23 22:38:30,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:30,908 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-23 22:38:30,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 22:38:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-23 22:38:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-23 22:38:30,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:30,913 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:30,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:38:31,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:38:31,121 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 22:38:31,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1344832596, now seen corresponding path program 1 times [2024-11-23 22:38:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:31,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64251674] [2024-11-23 22:38:31,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:38:31,206 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:38:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:38:31,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 22:38:31,276 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:38:31,277 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-23 22:38:31,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-23 22:38:31,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:38:31,283 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-23 22:38:31,331 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 22:38:31,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:38:31 BoogieIcfgContainer [2024-11-23 22:38:31,340 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 22:38:31,340 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 22:38:31,341 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 22:38:31,341 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 22:38:31,344 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:29" (3/4) ... [2024-11-23 22:38:31,347 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 22:38:31,348 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 22:38:31,349 INFO L158 Benchmark]: Toolchain (without parser) took 3814.26ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 77.9MB in the end (delta: 11.6MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2024-11-23 22:38:31,349 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:31,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1584.03ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 79.3MB in the end (delta: 9.9MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2024-11-23 22:38:31,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.69ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 76.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:31,350 INFO L158 Benchmark]: Boogie Preprocessor took 81.20ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:31,351 INFO L158 Benchmark]: RCFGBuilder took 470.41ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 62.6MB in the end (delta: 12.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 22:38:31,351 INFO L158 Benchmark]: TraceAbstraction took 1572.57ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 78.7MB in the end (delta: -16.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:31,351 INFO L158 Benchmark]: Witness Printer took 7.62ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.9MB in the end (delta: 796.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:31,355 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1584.03ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 79.3MB in the end (delta: 9.9MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.69ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 76.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 81.20ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 470.41ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 62.6MB in the end (delta: 12.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1572.57ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 78.7MB in the end (delta: -16.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.62ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.9MB in the end (delta: 796.6kB). 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] [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_multiply_11_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] [L1552] CALL globalReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1512] return 1; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \result=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] RET globalReturnsTrue() 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] [L1552] COND TRUE globalReturnsTrue() [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) [L1566] CALL globalReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1512] return 1; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \result=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] RET globalReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalReturnsTrue() [L1568] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data * 2 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 3 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 45 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 4/6 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 [2024-11-23 22:38:31,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/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_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC --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 ffc1d4ff5146147535a8cadfa3671cd765ae4ddcb2dacc7af945329a570780ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:38:34,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:38:34,703 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-23 22:38:34,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:38:34,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:38:34,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-23 22:38:34,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:38:34,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:38:34,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:38:34,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:38:34,783 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:38:34,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:38:34,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:38:34,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:38:34,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:38:34,784 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:38:34,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:38:34,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:38:34,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:38:34,786 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:38:34,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:38:34,786 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:38:34,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:38:34,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:38:34,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:38:34,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:38:34,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:38:34,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:38:34,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:38:34,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:38:34,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:38:34,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:38:34,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:38:34,788 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:38:34,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:38:34,788 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 22:38:34,788 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 22:38:34,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:38:34,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:38:34,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:38:34,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:38:34,789 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_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC 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 -> ffc1d4ff5146147535a8cadfa3671cd765ae4ddcb2dacc7af945329a570780ea [2024-11-23 22:38:35,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:38:35,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:38:35,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:38:35,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:38:35,152 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:38:35,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i [2024-11-23 22:38:38,463 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/4ab939c4c/3105d5706ce647df985bb9f8928eb25f/FLAGa73bc0d18 [2024-11-23 22:38:38,982 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:38:38,982 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i [2024-11-23 22:38:39,011 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/4ab939c4c/3105d5706ce647df985bb9f8928eb25f/FLAGa73bc0d18 [2024-11-23 22:38:39,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/data/4ab939c4c/3105d5706ce647df985bb9f8928eb25f [2024-11-23 22:38:39,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:38:39,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:38:39,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:38:39,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:38:39,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:38:39,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:39" (1/1) ... [2024-11-23 22:38:39,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca16a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:39, skipping insertion in model container [2024-11-23 22:38:39,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:39" (1/1) ... [2024-11-23 22:38:39,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:38:40,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:38:40,065 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:38:40,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:38:40,382 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:38:40,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40 WrapperNode [2024-11-23 22:38:40,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:38:40,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:38:40,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:38:40,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:38:40,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,440 INFO L138 Inliner]: procedures = 503, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-23 22:38:40,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:38:40,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:38:40,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:38:40,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:38:40,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,472 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]. [2024-11-23 22:38:40,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,482 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:38:40,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:38:40,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:38:40,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:38:40,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (1/1) ... [2024-11-23 22:38:40,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:38:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:38:40,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:38:40,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:38:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-23 22:38:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-23 22:38:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrue [2024-11-23 22:38:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrue [2024-11-23 22:38:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 22:38:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:38:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:38:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:38:40,787 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:38:40,789 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:38:40,994 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-23 22:38:40,994 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:38:41,011 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:38:41,011 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 22:38:41,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:41 BoogieIcfgContainer [2024-11-23 22:38:41,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:38:41,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:38:41,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:38:41,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:38:41,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:38:39" (1/3) ... [2024-11-23 22:38:41,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efd9188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:38:41, skipping insertion in model container [2024-11-23 22:38:41,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:40" (2/3) ... [2024-11-23 22:38:41,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efd9188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:38:41, skipping insertion in model container [2024-11-23 22:38:41,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:41" (3/3) ... [2024-11-23 22:38:41,029 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i [2024-11-23 22:38:41,049 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:38:41,051 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_multiply_11_bad.i that has 3 procedures, 30 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 22:38:41,125 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:38:41,146 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;@2a544202, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:38:41,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 22:38:41,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 23 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-23 22:38:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 22:38:41,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:41,163 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:41,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 22:38:41,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1814819498, now seen corresponding path program 1 times [2024-11-23 22:38:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:41,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059944817] [2024-11-23 22:38:41,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:41,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:38:41,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:38:41,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:38:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:41,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:38:41,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:38:41,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:38:41,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 22:38:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059944817] [2024-11-23 22:38:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059944817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:41,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:41,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:38:41,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662944996] [2024-11-23 22:38:41,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:41,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:38:41,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 22:38:41,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:38:41,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:38:41,618 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 23 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 22:38:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:41,665 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-23 22:38:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:38:41,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-11-23 22:38:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:41,676 INFO L225 Difference]: With dead ends: 51 [2024-11-23 22:38:41,678 INFO L226 Difference]: Without dead ends: 23 [2024-11-23 22:38:41,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:38:41,688 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:41,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:38:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-23 22:38:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-23 22:38:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-23 22:38:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-23 22:38:41,738 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 20 [2024-11-23 22:38:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:41,741 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-23 22:38:41,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 22:38:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-23 22:38:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-23 22:38:41,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:41,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:41,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:38:41,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:41,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 22:38:41,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -761264401, now seen corresponding path program 1 times [2024-11-23 22:38:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:38:41,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253470003] [2024-11-23 22:38:41,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:41,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:38:41,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:38:41,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:38:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:38:42,120 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:38:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:38:42,187 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-23 22:38:42,187 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:38:42,191 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-23 22:38:42,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-23 22:38:42,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 22:38:42,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:42,402 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-23 22:38:42,432 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 22:38:42,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:38:42 BoogieIcfgContainer [2024-11-23 22:38:42,437 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 22:38:42,438 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 22:38:42,438 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 22:38:42,438 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 22:38:42,439 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:41" (3/4) ... [2024-11-23 22:38:42,442 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 22:38:42,443 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 22:38:42,444 INFO L158 Benchmark]: Toolchain (without parser) took 3405.55ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 90.3MB in the beginning and 185.0MB in the end (delta: -94.7MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2024-11-23 22:38:42,445 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:42,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1343.35ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 68.6MB in the end (delta: 21.6MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2024-11-23 22:38:42,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.00ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:42,446 INFO L158 Benchmark]: Boogie Preprocessor took 55.54ms. Allocated memory is still 117.4MB. Free memory was 66.1MB in the beginning and 63.7MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:42,447 INFO L158 Benchmark]: RCFGBuilder took 514.38ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 49.9MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 22:38:42,447 INFO L158 Benchmark]: TraceAbstraction took 1421.90ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 49.4MB in the beginning and 185.1MB in the end (delta: -135.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:42,448 INFO L158 Benchmark]: Witness Printer took 5.33ms. Allocated memory is still 234.9MB. Free memory was 185.1MB in the beginning and 185.0MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:38:42,450 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1343.35ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 68.6MB in the end (delta: 21.6MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.00ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.54ms. Allocated memory is still 117.4MB. Free memory was 66.1MB in the beginning and 63.7MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 514.38ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 49.9MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1421.90ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 49.4MB in the beginning and 185.1MB in the end (delta: -135.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.33ms. Allocated memory is still 234.9MB. Free memory was 185.1MB in the beginning and 185.0MB in the end (delta: 27.7kB). 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] [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_multiply_11_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] [L1552] CALL globalReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1512] return 1; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \result=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] RET globalReturnsTrue() 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] [L1552] COND TRUE globalReturnsTrue() [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) [L1566] CALL globalReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1512] return 1; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \result=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] RET globalReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalReturnsTrue() [L1568] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data * 2 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 3 procedures, 30 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, 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, 100 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 35 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 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 [2024-11-23 22:38:42,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cdf98a8-5455-4754-80da-6586c39cd7f6/bin/uautomizer-verify-LYvppIcaGC/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