./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/memsafety-bftpd/bftpd_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/memsafety-bftpd/bftpd_3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 32bit --witnessprinter.graph.data.programhash ad9008297d469fdf1b53895572d7ca26f03d4a3ba390cb2ca57d3d5734b41bc4 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:04:12,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:04:12,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-29 11:04:12,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:04:12,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:04:12,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:04:12,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:04:12,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:04:12,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:04:12,491 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:04:12,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:04:12,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:04:12,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:04:12,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:04:12,491 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:04:12,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:04:12,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:04:12,492 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:04:12,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:12,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:12,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:04:12,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:04:12,493 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad9008297d469fdf1b53895572d7ca26f03d4a3ba390cb2ca57d3d5734b41bc4 [2025-04-29 11:04:12,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:04:12,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:04:12,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:04:12,708 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:04:12,708 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:04:12,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-bftpd/bftpd_3.c [2025-04-29 11:04:13,989 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e062a279/bdda6e5392df4428bc371b3bc081a68d/FLAGbbc495e0b [2025-04-29 11:04:14,212 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:04:14,213 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memsafety-bftpd/bftpd_3.c [2025-04-29 11:04:14,218 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:14,218 WARN L117 ultiparseSymbolTable]: System include string.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:14,226 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e062a279/bdda6e5392df4428bc371b3bc081a68d/FLAGbbc495e0b [2025-04-29 11:04:14,991 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e062a279/bdda6e5392df4428bc371b3bc081a68d [2025-04-29 11:04:14,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:04:14,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:04:14,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:04:14,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:04:15,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:04:15,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:04:14" (1/1) ... [2025-04-29 11:04:15,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e63a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15, skipping insertion in model container [2025-04-29 11:04:15,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:04:14" (1/1) ... [2025-04-29 11:04:15,011 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:04:15,165 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:04:15,180 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:04:15,212 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:04:15,227 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:04:15,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15 WrapperNode [2025-04-29 11:04:15,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:04:15,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:04:15,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:04:15,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:04:15,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,261 INFO L138 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2025-04-29 11:04:15,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:04:15,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:04:15,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:04:15,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:04:15,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,272 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,288 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [9, 9, 6]. 38 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [6, 9, 6]. The 0 writes are split as follows [0, 0, 0]. [2025-04-29 11:04:15,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,293 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:04:15,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:04:15,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:04:15,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:04:15,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (1/1) ... [2025-04-29 11:04:15,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:15,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:04:15,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:04:15,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2025-04-29 11:04:15,351 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:04:15,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-29 11:04:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:04:15,424 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:04:15,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:04:15,531 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-04-29 11:04:15,531 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:04:15,537 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:04:15,538 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:04:15,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:15 BoogieIcfgContainer [2025-04-29 11:04:15,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:04:15,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:04:15,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:04:15,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:04:15,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:04:14" (1/3) ... [2025-04-29 11:04:15,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96d8773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:04:15, skipping insertion in model container [2025-04-29 11:04:15,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:15" (2/3) ... [2025-04-29 11:04:15,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96d8773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:04:15, skipping insertion in model container [2025-04-29 11:04:15,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:15" (3/3) ... [2025-04-29 11:04:15,547 INFO L128 eAbstractionObserver]: Analyzing ICFG bftpd_3.c [2025-04-29 11:04:15,557 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:04:15,558 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bftpd_3.c that has 2 procedures, 28 locations, 39 edges, 1 initial locations, 1 loop locations, and 2 error locations. [2025-04-29 11:04:15,592 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:04:15,603 INFO L340 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;@4cbef8be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:04:15,605 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-29 11:04:15,608 INFO L278 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-04-29 11:04:15,613 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-29 11:04:15,614 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:04:15,614 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:15,614 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [parse_inputErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, parse_inputErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:04:15,618 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1080096556, now seen corresponding path program 1 times [2025-04-29 11:04:15,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:15,624 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201038965] [2025-04-29 11:04:15,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:15,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:15,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:04:15,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:04:15,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:15,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:15,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:15,795 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201038965] [2025-04-29 11:04:15,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201038965] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:15,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:15,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:15,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329979462] [2025-04-29 11:04:15,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:15,799 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:04:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:15,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:04:15,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:04:15,811 INFO L87 Difference]: Start difference. First operand has 28 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:04:15,849 INFO L93 Difference]: Finished difference Result 59 states and 82 transitions. [2025-04-29 11:04:15,850 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:04:15,850 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-29 11:04:15,850 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:04:15,854 INFO L225 Difference]: With dead ends: 59 [2025-04-29 11:04:15,854 INFO L226 Difference]: Without dead ends: 30 [2025-04-29 11:04:15,856 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:04:15,857 INFO L437 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:04:15,858 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:04:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-04-29 11:04:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-04-29 11:04:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-04-29 11:04:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2025-04-29 11:04:15,880 INFO L79 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 8 [2025-04-29 11:04:15,880 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:04:15,880 INFO L485 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2025-04-29 11:04:15,880 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:15,880 INFO L278 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2025-04-29 11:04:15,881 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-29 11:04:15,881 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:04:15,881 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:15,881 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:04:15,881 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [parse_inputErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, parse_inputErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:04:15,881 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash -938321462, now seen corresponding path program 1 times [2025-04-29 11:04:15,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:15,882 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363866518] [2025-04-29 11:04:15,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:15,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:15,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:04:15,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:04:15,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:15,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:16,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:16,024 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363866518] [2025-04-29 11:04:16,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363866518] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:04:16,024 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999005273] [2025-04-29 11:04:16,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:16,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:04:16,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:04:16,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:04:16,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-29 11:04:16,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:04:16,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:04:16,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:16,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:16,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-29 11:04:16,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:04:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:16,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:04:16,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999005273] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:16,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-29 11:04:16,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-04-29 11:04:16,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753230636] [2025-04-29 11:04:16,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:16,172 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:04:16,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:16,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:04:16,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:04:16,172 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:04:16,209 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2025-04-29 11:04:16,209 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:04:16,209 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-29 11:04:16,209 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:04:16,210 INFO L225 Difference]: With dead ends: 30 [2025-04-29 11:04:16,210 INFO L226 Difference]: Without dead ends: 29 [2025-04-29 11:04:16,210 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-29 11:04:16,211 INFO L437 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:04:16,211 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 92 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:04:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-04-29 11:04:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-04-29 11:04:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-04-29 11:04:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2025-04-29 11:04:16,214 INFO L79 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 13 [2025-04-29 11:04:16,214 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:04:16,214 INFO L485 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2025-04-29 11:04:16,214 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:16,214 INFO L278 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2025-04-29 11:04:16,215 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-29 11:04:16,215 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:04:16,215 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:16,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-29 11:04:16,419 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:04:16,419 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [parse_inputErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, parse_inputErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:04:16,419 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 976805828, now seen corresponding path program 1 times [2025-04-29 11:04:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:16,420 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610647486] [2025-04-29 11:04:16,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:16,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:16,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-29 11:04:16,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-29 11:04:16,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:16,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-29 11:04:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:16,461 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610647486] [2025-04-29 11:04:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610647486] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:16,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083602461] [2025-04-29 11:04:16,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:16,462 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:04:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:16,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:04:16,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:04:16,462 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:04:16,476 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2025-04-29 11:04:16,476 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:04:16,476 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-29 11:04:16,477 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:04:16,477 INFO L225 Difference]: With dead ends: 29 [2025-04-29 11:04:16,477 INFO L226 Difference]: Without dead ends: 0 [2025-04-29 11:04:16,477 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:04:16,478 INFO L437 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:04:16,478 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:04:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-29 11:04:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-29 11:04:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-29 11:04:16,479 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2025-04-29 11:04:16,479 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:04:16,479 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-29 11:04:16,479 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:16,479 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-29 11:04:16,479 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-29 11:04:16,481 INFO L790 garLoopResultBuilder]: Registering result SAFE for location parse_inputErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-04-29 11:04:16,481 INFO L790 garLoopResultBuilder]: Registering result SAFE for location parse_inputErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-04-29 11:04:16,481 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:04:16,483 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-29 11:04:16,485 INFO L312 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-04-29 11:04:16,501 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:04:16,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:04:16 BoogieIcfgContainer [2025-04-29 11:04:16,524 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:04:16,525 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:04:16,525 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:04:16,525 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:04:16,525 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:15" (3/4) ... [2025-04-29 11:04:16,527 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:04:16,530 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure parse_input [2025-04-29 11:04:16,533 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2025-04-29 11:04:16,533 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-04-29 11:04:16,533 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-29 11:04:16,533 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-29 11:04:16,533 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-29 11:04:16,586 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:04:16,586 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:04:16,586 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:04:16,587 INFO L158 Benchmark]: Toolchain (without parser) took 1592.77ms. Allocated memory is still 167.8MB. Free memory was 123.3MB in the beginning and 114.7MB in the end (delta: 8.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2025-04-29 11:04:16,587 INFO L158 Benchmark]: CDTParser took 1.09ms. Allocated memory is still 201.3MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:16,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.51ms. Allocated memory is still 167.8MB. Free memory was 123.3MB in the beginning and 109.2MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:04:16,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.49ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:16,587 INFO L158 Benchmark]: Boogie Preprocessor took 41.88ms. Allocated memory is still 167.8MB. Free memory was 107.1MB in the beginning and 106.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:16,587 INFO L158 Benchmark]: RCFGBuilder took 233.43ms. Allocated memory is still 167.8MB. Free memory was 106.1MB in the beginning and 91.4MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:04:16,588 INFO L158 Benchmark]: TraceAbstraction took 984.00ms. Allocated memory is still 167.8MB. Free memory was 91.4MB in the beginning and 120.6MB in the end (delta: -29.2MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2025-04-29 11:04:16,588 INFO L158 Benchmark]: Witness Printer took 61.49ms. Allocated memory is still 167.8MB. Free memory was 120.6MB in the beginning and 114.7MB in the end (delta: 5.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:16,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09ms. Allocated memory is still 201.3MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.51ms. Allocated memory is still 167.8MB. Free memory was 123.3MB in the beginning and 109.2MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.49ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.88ms. Allocated memory is still 167.8MB. Free memory was 107.1MB in the beginning and 106.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 233.43ms. Allocated memory is still 167.8MB. Free memory was 106.1MB in the beginning and 91.4MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 984.00ms. Allocated memory is still 167.8MB. Free memory was 91.4MB in the beginning and 120.6MB in the end (delta: -29.2MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * Witness Printer took 61.49ms. Allocated memory is still 167.8MB. Free memory was 120.6MB in the beginning and 114.7MB in the end (delta: 5.9MB). 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 - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 39 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 246 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 167 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 79 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/13 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((i == 0) || (0 < i)) RESULT: Ultimate proved your program to be correct! [2025-04-29 11:04:16,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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: TRUE