./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_08_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_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/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_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/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_abe999e4-5be3-426d-8481-07273d3f7bfc/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 8ed9c85949a16856c9f15031fec24cb827e576ae518a401576d428e5f7d6073b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:56:36,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:56:36,414 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-24 01:56:36,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:56:36,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:56:36,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:56:36,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:56:36,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:56:36,467 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:56:36,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:56:36,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:56:36,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:56:36,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:56:36,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:56:36,469 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:56:36,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:56:36,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:56:36,471 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:36,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:36,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:36,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:56:36,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:56:36,472 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_abe999e4-5be3-426d-8481-07273d3f7bfc/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 -> 8ed9c85949a16856c9f15031fec24cb827e576ae518a401576d428e5f7d6073b [2024-11-24 01:56:36,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:56:36,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:56:36,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:56:36,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:56:36,811 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:56:36,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i [2024-11-24 01:56:39,921 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/fbbd82be9/ae55c589fa4c41a49bad7094096470bd/FLAGcb36444a1 [2024-11-24 01:56:40,452 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:56:40,453 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i [2024-11-24 01:56:40,483 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/fbbd82be9/ae55c589fa4c41a49bad7094096470bd/FLAGcb36444a1 [2024-11-24 01:56:40,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/fbbd82be9/ae55c589fa4c41a49bad7094096470bd [2024-11-24 01:56:40,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:56:40,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:56:40,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:40,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:56:40,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:56:40,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:40" (1/1) ... [2024-11-24 01:56:40,530 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 24.11 01:56:40, skipping insertion in model container [2024-11-24 01:56:40,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:40" (1/1) ... [2024-11-24 01:56:40,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:56:41,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:41,761 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:56:41,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:42,027 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:56:42,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42 WrapperNode [2024-11-24 01:56:42,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:42,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:42,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:56:42,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:56:42,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,100 INFO L138 Inliner]: procedures = 500, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-11-24 01:56:42,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:42,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:56:42,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:56:42,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:56:42,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,137 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]. [2024-11-24 01:56:42,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,144 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:56:42,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:56:42,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:56:42,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:56:42,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (1/1) ... [2024-11-24 01:56:42,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:42,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:56:42,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:56:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 01:56:42,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 01:56:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:56:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:56:42,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:56:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2024-11-24 01:56:42,231 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2024-11-24 01:56:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:56:42,404 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:56:42,406 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:56:42,579 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-24 01:56:42,579 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:56:42,589 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:56:42,589 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:56:42,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:42 BoogieIcfgContainer [2024-11-24 01:56:42,590 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:56:42,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:56:42,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:56:42,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:56:42,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:56:40" (1/3) ... [2024-11-24 01:56:42,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73733994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:42, skipping insertion in model container [2024-11-24 01:56:42,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:42" (2/3) ... [2024-11-24 01:56:42,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73733994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:42, skipping insertion in model container [2024-11-24 01:56:42,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:42" (3/3) ... [2024-11-24 01:56:42,602 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i [2024-11-24 01:56:42,620 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:56:42,622 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i that has 3 procedures, 32 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 01:56:42,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:56:42,700 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;@1dbf038, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:56:42,700 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:56:42,705 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) [2024-11-24 01:56:42,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:56:42,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:42,712 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] [2024-11-24 01:56:42,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:56:42,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1811171087, now seen corresponding path program 1 times [2024-11-24 01:56:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:42,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764027756] [2024-11-24 01:56:42,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:56:43,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:43,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764027756] [2024-11-24 01:56:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764027756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52430665] [2024-11-24 01:56:43,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:43,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:43,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:43,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:56:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:43,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:56:43,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:56:43,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:43,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52430665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:43,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:56:43,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-24 01:56:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660881831] [2024-11-24 01:56:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:43,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:56:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:43,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:56:43,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:56:43,361 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) [2024-11-24 01:56:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:43,404 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-24 01:56:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:56:43,409 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 [2024-11-24 01:56:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:43,415 INFO L225 Difference]: With dead ends: 53 [2024-11-24 01:56:43,416 INFO L226 Difference]: Without dead ends: 24 [2024-11-24 01:56:43,418 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 [2024-11-24 01:56:43,421 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 [2024-11-24 01:56:43,422 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] [2024-11-24 01:56:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-24 01:56:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-24 01:56:43,451 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) [2024-11-24 01:56:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-24 01:56:43,459 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2024-11-24 01:56:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:43,460 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-24 01:56:43,461 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) [2024-11-24 01:56:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-24 01:56:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-24 01:56:43,462 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:43,462 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] [2024-11-24 01:56:43,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:56:43,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:56:43,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:56:43,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1344832596, now seen corresponding path program 1 times [2024-11-24 01:56:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:43,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106618418] [2024-11-24 01:56:43,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:56:43,717 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:56:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:56:43,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 01:56:43,753 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:56:43,755 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 01:56:43,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 01:56:43,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:56:43,760 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-24 01:56:43,785 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:56:43,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:56:43 BoogieIcfgContainer [2024-11-24 01:56:43,788 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:56:43,789 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:56:43,789 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:56:43,789 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:56:43,789 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:42" (3/4) ... [2024-11-24 01:56:43,792 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:56:43,793 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:56:43,794 INFO L158 Benchmark]: Toolchain (without parser) took 3276.07ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 90.5MB in the beginning and 307.6MB in the end (delta: -217.1MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2024-11-24 01:56:43,794 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:56:43,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1509.43ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 81.0MB in the end (delta: 9.4MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2024-11-24 01:56:43,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.73ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 78.4MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:56:43,795 INFO L158 Benchmark]: Boogie Preprocessor took 60.53ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 76.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:56:43,795 INFO L158 Benchmark]: RCFGBuilder took 428.41ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 63.9MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:56:43,795 INFO L158 Benchmark]: TraceAbstraction took 1195.83ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 63.4MB in the beginning and 307.6MB in the end (delta: -244.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:56:43,796 INFO L158 Benchmark]: Witness Printer took 4.16ms. Allocated memory is still 352.3MB. Free memory was 307.6MB in the beginning and 307.6MB in the end (delta: 24.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:56:43,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1509.43ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 81.0MB in the end (delta: 9.4MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.73ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 78.4MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.53ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 76.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 428.41ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 63.9MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1195.83ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 63.4MB in the beginning and 307.6MB in the end (delta: -244.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.16ms. Allocated memory is still 352.3MB. Free memory was 307.6MB in the beginning and 307.6MB in the end (delta: 24.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566, overapproximation of fgets at line 1564. 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] [L1586] 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) [L1586] 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] [L1587] CALL CWE191_Integer_Underflow__int_fgets_multiply_08_bad() [L1558] int data; [L1559] 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] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] 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] [L1560] RET staticReturnsTrue() 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] [L1560] COND TRUE staticReturnsTrue() [L1563] 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] [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] 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] [L1574] RET staticReturnsTrue() 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] [L1574] COND TRUE staticReturnsTrue() [L1576] 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] [L1578] 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: 1578]: 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: 1.1s, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s 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 [2024-11-24 01:56:43,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/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_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/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_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/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_abe999e4-5be3-426d-8481-07273d3f7bfc/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 8ed9c85949a16856c9f15031fec24cb827e576ae518a401576d428e5f7d6073b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:56:46,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:56:46,617 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-24 01:56:46,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:56:46,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:56:46,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-24 01:56:46,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:56:46,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:56:46,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:56:46,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:56:46,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:56:46,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:56:46,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:56:46,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:56:46,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:56:46,676 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:56:46,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:56:46,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:56:46,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:56:46,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:56:46,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:56:46,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:56:46,677 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:56:46,677 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:56:46,677 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:56:46,678 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:46,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:46,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:46,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:56:46,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:56:46,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:56:46,680 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_abe999e4-5be3-426d-8481-07273d3f7bfc/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 -> 8ed9c85949a16856c9f15031fec24cb827e576ae518a401576d428e5f7d6073b [2024-11-24 01:56:47,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:56:47,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:56:47,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:56:47,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:56:47,069 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:56:47,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i [2024-11-24 01:56:50,147 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/65d23386c/791a9eeee40945a2830f8875d13f981e/FLAGf00172a41 [2024-11-24 01:56:50,666 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:56:50,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i [2024-11-24 01:56:50,704 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/65d23386c/791a9eeee40945a2830f8875d13f981e/FLAGf00172a41 [2024-11-24 01:56:50,722 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/data/65d23386c/791a9eeee40945a2830f8875d13f981e [2024-11-24 01:56:50,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:56:50,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:56:50,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:50,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:56:50,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:56:50,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:50" (1/1) ... [2024-11-24 01:56:50,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c945dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:50, skipping insertion in model container [2024-11-24 01:56:50,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:50" (1/1) ... [2024-11-24 01:56:50,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:56:51,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:51,807 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:56:51,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:52,084 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:56:52,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52 WrapperNode [2024-11-24 01:56:52,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:52,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:52,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:56:52,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:56:52,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,147 INFO L138 Inliner]: procedures = 505, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-24 01:56:52,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:52,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:56:52,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:56:52,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:56:52,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,186 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]. [2024-11-24 01:56:52,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,193 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:56:52,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:56:52,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:56:52,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:56:52,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (1/1) ... [2024-11-24 01:56:52,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:52,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:52,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:56:52,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:56:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 01:56:52,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 01:56:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:56:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:56:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:56:52,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:56:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2024-11-24 01:56:52,268 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2024-11-24 01:56:52,403 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:56:52,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:56:52,605 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-24 01:56:52,606 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:56:52,617 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:56:52,618 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:56:52,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:52 BoogieIcfgContainer [2024-11-24 01:56:52,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:56:52,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:56:52,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:56:52,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:56:52,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:56:50" (1/3) ... [2024-11-24 01:56:52,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecc894e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:52, skipping insertion in model container [2024-11-24 01:56:52,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:52" (2/3) ... [2024-11-24 01:56:52,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecc894e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:52, skipping insertion in model container [2024-11-24 01:56:52,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:52" (3/3) ... [2024-11-24 01:56:52,633 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i [2024-11-24 01:56:52,648 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:56:52,650 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_multiply_08_bad.i that has 3 procedures, 30 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 01:56:52,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:56:52,742 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;@42fcf7ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:56:52,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:56:52,747 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) [2024-11-24 01:56:52,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 01:56:52,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:52,755 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:52,756 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:56:52,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1814819498, now seen corresponding path program 1 times [2024-11-24 01:56:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:56:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041092228] [2024-11-24 01:56:52,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:52,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:52,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:52,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:52,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:56:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:52,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:56:52,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:56:53,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:53,040 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:56:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041092228] [2024-11-24 01:56:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041092228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:53,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:53,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:56:53,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674653446] [2024-11-24 01:56:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:53,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:56:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:56:53,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:56:53,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:56:53,075 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) [2024-11-24 01:56:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:53,111 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-24 01:56:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:56:53,113 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 [2024-11-24 01:56:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:53,120 INFO L225 Difference]: With dead ends: 51 [2024-11-24 01:56:53,122 INFO L226 Difference]: Without dead ends: 23 [2024-11-24 01:56:53,126 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 [2024-11-24 01:56:53,129 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 [2024-11-24 01:56:53,134 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] [2024-11-24 01:56:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-24 01:56:53,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-24 01:56:53,173 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) [2024-11-24 01:56:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-24 01:56:53,181 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 20 [2024-11-24 01:56:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:53,183 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-24 01:56:53,184 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) [2024-11-24 01:56:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-24 01:56:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:56:53,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:53,187 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] [2024-11-24 01:56:53,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:56:53,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:53,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:56:53,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash -761264401, now seen corresponding path program 1 times [2024-11-24 01:56:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:56:53,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102362187] [2024-11-24 01:56:53,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:53,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:53,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:53,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:53,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:56:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:56:53,529 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:56:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:56:53,579 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-24 01:56:53,579 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:56:53,581 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 01:56:53,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 01:56:53,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:56:53,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:53,790 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-24 01:56:53,819 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:56:53,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:56:53 BoogieIcfgContainer [2024-11-24 01:56:53,823 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:56:53,823 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:56:53,823 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:56:53,824 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:56:53,824 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:52" (3/4) ... [2024-11-24 01:56:53,827 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:56:53,828 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:56:53,829 INFO L158 Benchmark]: Toolchain (without parser) took 3101.69ms. Allocated memory is still 83.9MB. Free memory was 57.3MB in the beginning and 50.4MB in the end (delta: 6.9MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2024-11-24 01:56:53,829 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 83.9MB. Free memory was 64.4MB in the beginning and 64.4MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:56:53,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1356.34ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 52.2MB in the end (delta: 4.7MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2024-11-24 01:56:53,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.55ms. Allocated memory is still 83.9MB. Free memory was 52.2MB in the beginning and 49.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:56:53,830 INFO L158 Benchmark]: Boogie Preprocessor took 54.11ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.2MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:56:53,831 INFO L158 Benchmark]: RCFGBuilder took 415.96ms. Allocated memory is still 83.9MB. Free memory was 47.2MB in the beginning and 33.7MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:56:53,831 INFO L158 Benchmark]: TraceAbstraction took 1201.28ms. Allocated memory is still 83.9MB. Free memory was 33.3MB in the beginning and 50.4MB in the end (delta: -17.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2024-11-24 01:56:53,831 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 83.9MB. Free memory was 50.4MB in the beginning and 50.4MB in the end (delta: 3.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:56:53,833 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 83.9MB. Free memory was 64.4MB in the beginning and 64.4MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1356.34ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 52.2MB in the end (delta: 4.7MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.55ms. Allocated memory is still 83.9MB. Free memory was 52.2MB in the beginning and 49.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.11ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.2MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 415.96ms. Allocated memory is still 83.9MB. Free memory was 47.2MB in the beginning and 33.7MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1201.28ms. Allocated memory is still 83.9MB. Free memory was 33.3MB in the beginning and 50.4MB in the end (delta: -17.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 83.9MB. Free memory was 50.4MB in the beginning and 50.4MB in the end (delta: 3.8kB). 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566, overapproximation of fgets at line 1564. 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] [L1586] 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) [L1586] 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] [L1587] CALL CWE191_Integer_Underflow__int_fgets_multiply_08_bad() [L1558] int data; [L1559] 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] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] 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] [L1560] RET staticReturnsTrue() 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] [L1560] COND TRUE staticReturnsTrue() [L1563] 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] [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] 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] [L1574] RET staticReturnsTrue() 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] [L1574] COND TRUE staticReturnsTrue() [L1576] 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] [L1578] 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: 1578]: 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: 1.1s, 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, 0.1s 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 [2024-11-24 01:56:53,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe999e4-5be3-426d-8481-07273d3f7bfc/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