./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5317dae 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/signedintegeroverflow-regression/PrefixDecrement.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 8bdb977ff214625ad8e508f43c66811f5e3cd7c697d49c33523a8c57afa53f24 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 04:08:50,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 04:08:50,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 04:08:50,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 04:08:50,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 04:08:50,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 04:08:50,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 04:08:50,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 04:08:50,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 04:08:50,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 04:08:50,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 04:08:50,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 04:08:50,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 04:08:50,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 04:08:50,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 04:08:50,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 04:08:50,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 04:08:50,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 04:08:50,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 04:08:50,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 04:08:50,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 04:08:50,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 04:08:50,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 04:08:50,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 04:08:50,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 04:08:50,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 04:08:50,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 04:08:50,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 04:08:50,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 04:08:50,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 04:08:50,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 04:08:50,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 04:08:50,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 04:08:50,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 04:08:50,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 04:08:50,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 04:08:50,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 04:08:50,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 04:08:50,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 04:08:50,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 04:08:50,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 04:08:50,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-16 04:08:50,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 04:08:50,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 04:08:50,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 04:08:50,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 04:08:50,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 04:08:50,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 04:08:50,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 04:08:50,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 04:08:50,911 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 04:08:50,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 04:08:50,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 04:08:50,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 04:08:50,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 04:08:50,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 04:08:50,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 04:08:50,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 04:08:50,913 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-16 04:08:50,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 04:08:50,913 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 04:08:50,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 04:08:50,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 04:08:50,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 04:08:50,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 04:08:50,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 04:08:50,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 04:08:50,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 04:08:50,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 04:08:50,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 04:08:50,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 04:08:50,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 04:08:50,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 04:08:50,915 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 04:08:50,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 04:08:50,915 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 04:08:50,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bdb977ff214625ad8e508f43c66811f5e3cd7c697d49c33523a8c57afa53f24 [2023-02-16 04:08:51,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 04:08:51,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 04:08:51,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 04:08:51,131 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 04:08:51,131 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 04:08:51,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i [2023-02-16 04:08:52,086 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 04:08:52,242 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 04:08:52,243 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/signedintegeroverflow-regression/PrefixDecrement.i [2023-02-16 04:08:52,251 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6413d23dc/a00fafef238b45c5bc466aacc36f8582/FLAG1fabe4bff [2023-02-16 04:08:52,261 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6413d23dc/a00fafef238b45c5bc466aacc36f8582 [2023-02-16 04:08:52,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 04:08:52,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 04:08:52,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 04:08:52,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 04:08:52,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 04:08:52,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183cee95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52, skipping insertion in model container [2023-02-16 04:08:52,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 04:08:52,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 04:08:52,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:08:52,465 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 04:08:52,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:08:52,509 INFO L208 MainTranslator]: Completed translation [2023-02-16 04:08:52,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52 WrapperNode [2023-02-16 04:08:52,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 04:08:52,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 04:08:52,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 04:08:52,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 04:08:52,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,537 INFO L138 Inliner]: procedures = 104, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2023-02-16 04:08:52,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 04:08:52,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 04:08:52,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 04:08:52,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 04:08:52,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 04:08:52,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 04:08:52,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 04:08:52,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 04:08:52,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (1/1) ... [2023-02-16 04:08:52,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 04:08:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:08:52,600 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) [2023-02-16 04:08:52,606 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 [2023-02-16 04:08:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 04:08:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 04:08:52,684 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 04:08:52,685 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 04:08:52,743 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 04:08:52,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 04:08:52,747 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 04:08:52,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:08:52 BoogieIcfgContainer [2023-02-16 04:08:52,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 04:08:52,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 04:08:52,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 04:08:52,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 04:08:52,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 04:08:52" (1/3) ... [2023-02-16 04:08:52,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e03385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:08:52, skipping insertion in model container [2023-02-16 04:08:52,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:08:52" (2/3) ... [2023-02-16 04:08:52,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e03385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:08:52, skipping insertion in model container [2023-02-16 04:08:52,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:08:52" (3/3) ... [2023-02-16 04:08:52,754 INFO L112 eAbstractionObserver]: Analyzing ICFG PrefixDecrement.i [2023-02-16 04:08:52,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 04:08:52,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-02-16 04:08:52,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 04:08:52,820 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;@3febb2e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 04:08:52,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-02-16 04:08:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 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) [2023-02-16 04:08:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-16 04:08:52,828 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 04:08:52,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-16 04:08:52,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-16 04:08:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:08:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2023-02-16 04:08:52,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:08:52,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85873298] [2023-02-16 04:08:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:08:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:08:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:08:52,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:08:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:08:52,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:08:52,922 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-16 04:08:52,923 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-02-16 04:08:52,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-02-16 04:08:52,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 04:08:52,936 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-16 04:08:52,941 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 04:08:52,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 04:08:52 BoogieIcfgContainer [2023-02-16 04:08:52,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 04:08:52,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 04:08:52,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 04:08:52,957 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 04:08:52,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:08:52" (3/4) ... [2023-02-16 04:08:52,958 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-16 04:08:52,996 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 04:08:52,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 04:08:52,998 INFO L158 Benchmark]: Toolchain (without parser) took 732.65ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 93.4MB in the beginning and 161.4MB in the end (delta: -68.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:08:52,999 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:08:53,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.90ms. Allocated memory is still 134.2MB. Free memory was 92.9MB in the beginning and 79.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-16 04:08:53,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.89ms. Allocated memory is still 134.2MB. Free memory was 79.2MB in the beginning and 77.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:08:53,002 INFO L158 Benchmark]: Boogie Preprocessor took 14.08ms. Allocated memory is still 134.2MB. Free memory was 77.8MB in the beginning and 76.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 04:08:53,003 INFO L158 Benchmark]: RCFGBuilder took 195.34ms. Allocated memory is still 134.2MB. Free memory was 76.6MB in the beginning and 68.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-16 04:08:53,005 INFO L158 Benchmark]: TraceAbstraction took 204.57ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 67.7MB in the beginning and 161.5MB in the end (delta: -93.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-02-16 04:08:53,006 INFO L158 Benchmark]: Witness Printer took 39.88ms. Allocated memory is still 190.8MB. Free memory was 161.4MB in the beginning and 161.4MB in the end (delta: -16.0kB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2023-02-16 04:08:53,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.90ms. Allocated memory is still 134.2MB. Free memory was 92.9MB in the beginning and 79.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.89ms. Allocated memory is still 134.2MB. Free memory was 79.2MB in the beginning and 77.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.08ms. Allocated memory is still 134.2MB. Free memory was 77.8MB in the beginning and 76.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 195.34ms. Allocated memory is still 134.2MB. Free memory was 76.6MB in the beginning and 68.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 204.57ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 67.7MB in the beginning and 161.5MB in the end (delta: -93.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Witness Printer took 39.88ms. Allocated memory is still 190.8MB. Free memory was 161.4MB in the beginning and 161.4MB in the end (delta: -16.0kB). Peak memory consumption was 6.1MB. 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: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L332] int x = -2147483647 - 1; VAL [x=-2147483648] [L333] --x VAL [x=-2147483648] - UnprovableResult [Line: 333]: 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 1 procedures, 9 locations, 2 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=9occurred 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, 3 NumberOfCodeBlocks, 3 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! [2023-02-16 04:08:53,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)