./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a31fd051 Calling Ultimate with: /usr/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_b3_o5-1.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.graphml --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 a1ab69f0937890c2718fbb3a364dff1229f612b683709e7f1057d021d65f81aa --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:43:10,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:43:10,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:43:10,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:43:10,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:43:10,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:43:10,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:43:10,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:43:10,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:43:10,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:43:10,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:43:10,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:43:10,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:43:10,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:43:10,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:43:10,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:43:10,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:43:10,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:43:10,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:43:10,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:43:10,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:43:10,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:43:10,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:43:10,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:43:10,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:43:10,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:43:10,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:43:10,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:43:10,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:43:10,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:43:10,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:43:10,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:43:10,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:43:10,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:43:10,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:43:10,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:43:10,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:43:10,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:43:10,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:43:10,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:43:10,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:43:10,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-15 13:43:10,546 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:43:10,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:43:10,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:43:10,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:43:10,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:43:10,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:43:10,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:43:10,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:43:10,549 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:43:10,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:43:10,549 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 13:43:10,550 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 13:43:10,551 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:43:10,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 13:43:10,551 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:43:10,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 13:43:10,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:43:10,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:43:10,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:43:10,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:43:10,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:43:10,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:43:10,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 13:43:10,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:43:10,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:43:10,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:43:10,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 13:43:10,553 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:43:10,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:43:10,553 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:43:10,553 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1ab69f0937890c2718fbb3a364dff1229f612b683709e7f1057d021d65f81aa [2023-02-15 13:43:10,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:43:10,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:43:10,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:43:10,755 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:43:10,755 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:43:10,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2023-02-15 13:43:11,622 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:43:11,794 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:43:11,795 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2023-02-15 13:43:11,798 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/996654b75/7768d55e8fca4758a544e127c9155200/FLAG58c6dd77c [2023-02-15 13:43:11,807 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/996654b75/7768d55e8fca4758a544e127c9155200 [2023-02-15 13:43:11,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:43:11,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:43:11,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:43:11,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:43:11,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:43:11,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c969ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11, skipping insertion in model container [2023-02-15 13:43:11,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:43:11,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:43:11,936 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c[514,527] [2023-02-15 13:43:11,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:43:11,943 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:43:11,952 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c[514,527] [2023-02-15 13:43:11,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:43:11,961 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:43:11,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11 WrapperNode [2023-02-15 13:43:11,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:43:11,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:43:11,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:43:11,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:43:11,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,978 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-02-15 13:43:11,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:43:11,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:43:11,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:43:11,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:43:11,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,988 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:43:11,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:43:11,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:43:11,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:43:11,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (1/1) ... [2023-02-15 13:43:11,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:43:12,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:43:12,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 13:43:12,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 13:43:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 13:43:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:43:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:43:12,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 13:43:12,046 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-02-15 13:43:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-02-15 13:43:12,087 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:43:12,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:43:12,182 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:43:12,186 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:43:12,186 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 13:43:12,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:43:12 BoogieIcfgContainer [2023-02-15 13:43:12,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:43:12,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:43:12,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:43:12,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:43:12,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:43:11" (1/3) ... [2023-02-15 13:43:12,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602719dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:43:12, skipping insertion in model container [2023-02-15 13:43:12,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:43:11" (2/3) ... [2023-02-15 13:43:12,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602719dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:43:12, skipping insertion in model container [2023-02-15 13:43:12,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:43:12" (3/3) ... [2023-02-15 13:43:12,193 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o5-1.c [2023-02-15 13:43:12,204 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:43:12,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-15 13:43:12,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:43:12,237 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@51eeb4e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:43:12,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-15 13:43:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:43:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:43:12,244 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:43:12,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:43:12,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:43:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:43:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash 890408432, now seen corresponding path program 1 times [2023-02-15 13:43:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:43:12,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975898157] [2023-02-15 13:43:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:43:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:43:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:43:12,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 13:43:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:43:12,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 13:43:12,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 13:43:12,329 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-02-15 13:43:12,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-02-15 13:43:12,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-02-15 13:43:12,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-02-15 13:43:12,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:43:12,334 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-15 13:43:12,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 13:43:12,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:43:12 BoogieIcfgContainer [2023-02-15 13:43:12,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 13:43:12,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 13:43:12,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 13:43:12,356 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 13:43:12,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:43:12" (3/4) ... [2023-02-15 13:43:12,357 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 13:43:12,376 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 13:43:12,377 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 13:43:12,377 INFO L158 Benchmark]: Toolchain (without parser) took 567.00ms. Allocated memory is still 157.3MB. Free memory was 123.1MB in the beginning and 85.9MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-02-15 13:43:12,378 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:43:12,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.61ms. Allocated memory is still 157.3MB. Free memory was 123.1MB in the beginning and 113.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 13:43:12,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.67ms. Allocated memory is still 157.3MB. Free memory was 113.1MB in the beginning and 112.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:43:12,379 INFO L158 Benchmark]: Boogie Preprocessor took 9.90ms. Allocated memory is still 157.3MB. Free memory was 112.1MB in the beginning and 111.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:43:12,379 INFO L158 Benchmark]: RCFGBuilder took 198.10ms. Allocated memory is still 157.3MB. Free memory was 111.0MB in the beginning and 101.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 13:43:12,380 INFO L158 Benchmark]: TraceAbstraction took 162.13ms. Allocated memory is still 157.3MB. Free memory was 100.6MB in the beginning and 87.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 13:43:12,380 INFO L158 Benchmark]: Witness Printer took 25.03ms. Allocated memory is still 157.3MB. Free memory was 87.5MB in the beginning and 85.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:43:12,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.61ms. Allocated memory is still 157.3MB. Free memory was 123.1MB in the beginning and 113.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.67ms. Allocated memory is still 157.3MB. Free memory was 113.1MB in the beginning and 112.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 9.90ms. Allocated memory is still 157.3MB. Free memory was 112.1MB in the beginning and 111.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 198.10ms. Allocated memory is still 157.3MB. Free memory was 111.0MB in the beginning and 101.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 162.13ms. Allocated memory is still 157.3MB. Free memory was 100.6MB in the beginning and 87.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 25.03ms. Allocated memory is still 157.3MB. Free memory was 87.5MB in the beginning and 85.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL id(input) VAL [\old(x)=-2147483648] [L7] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L8] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-15 13:43:12,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)