./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark29_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 574ddb4e 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/loop-zilu/benchmark29_linear.i -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 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 23:05:27,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 23:05:27,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 23:05:27,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 23:05:27,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 23:05:27,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 23:05:27,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 23:05:27,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 23:05:27,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 23:05:27,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 23:05:27,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 23:05:27,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 23:05:27,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 23:05:27,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 23:05:27,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 23:05:27,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 23:05:27,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 23:05:27,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 23:05:27,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 23:05:27,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 23:05:27,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 23:05:27,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 23:05:27,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 23:05:27,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 23:05:27,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 23:05:27,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 23:05:27,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 23:05:27,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 23:05:27,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 23:05:27,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 23:05:27,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 23:05:27,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 23:05:27,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 23:05:27,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 23:05:27,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 23:05:27,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 23:05:27,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 23:05:27,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 23:05:27,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 23:05:27,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 23:05:27,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 23:05:27,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-18 23:05:27,435 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 23:05:27,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 23:05:27,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 23:05:27,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 23:05:27,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 23:05:27,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 23:05:27,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 23:05:27,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 23:05:27,438 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 23:05:27,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 23:05:27,438 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 23:05:27,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 23:05:27,440 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 23:05:27,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 23:05:27,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 23:05:27,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 23:05:27,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 23:05:27,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:05:27,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 23:05:27,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 23:05:27,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 23:05:27,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 23:05:27,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 23:05:27,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 23:05:27,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 23:05:27,442 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 23:05:27,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 23:05:27,442 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 23:05:27,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 [2023-02-18 23:05:27,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 23:05:27,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 23:05:27,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 23:05:27,640 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 23:05:27,640 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 23:05:27,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2023-02-18 23:05:28,532 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 23:05:28,658 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 23:05:28,659 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2023-02-18 23:05:28,665 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a4f45472/a01f6df6815843429975f9d5843ede6b/FLAG379006b1c [2023-02-18 23:05:28,677 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a4f45472/a01f6df6815843429975f9d5843ede6b [2023-02-18 23:05:28,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 23:05:28,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 23:05:28,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 23:05:28,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 23:05:28,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 23:05:28,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299a06a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28, skipping insertion in model container [2023-02-18 23:05:28,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 23:05:28,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 23:05:28,818 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/loop-zilu/benchmark29_linear.i[868,881] [2023-02-18 23:05:28,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:05:28,832 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 23:05:28,840 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/loop-zilu/benchmark29_linear.i[868,881] [2023-02-18 23:05:28,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:05:28,852 INFO L208 MainTranslator]: Completed translation [2023-02-18 23:05:28,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28 WrapperNode [2023-02-18 23:05:28,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 23:05:28,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 23:05:28,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 23:05:28,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 23:05:28,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,873 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2023-02-18 23:05:28,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 23:05:28,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 23:05:28,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 23:05:28,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 23:05:28,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 23:05:28,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 23:05:28,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 23:05:28,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 23:05:28,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (1/1) ... [2023-02-18 23:05:28,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:05:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:05:28,919 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) [2023-02-18 23:05:28,937 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 [2023-02-18 23:05:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 23:05:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 23:05:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 23:05:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 23:05:29,003 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 23:05:29,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 23:05:29,074 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 23:05:29,078 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 23:05:29,079 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 23:05:29,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:05:29 BoogieIcfgContainer [2023-02-18 23:05:29,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 23:05:29,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 23:05:29,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 23:05:29,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 23:05:29,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 11:05:28" (1/3) ... [2023-02-18 23:05:29,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:05:29, skipping insertion in model container [2023-02-18 23:05:29,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:05:28" (2/3) ... [2023-02-18 23:05:29,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:05:29, skipping insertion in model container [2023-02-18 23:05:29,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:05:29" (3/3) ... [2023-02-18 23:05:29,086 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark29_linear.i [2023-02-18 23:05:29,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 23:05:29,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-18 23:05:29,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 23:05:29,133 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;@2da19c19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 23:05:29,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-18 23:05:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-02-18 23:05:29,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 23:05:29,140 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:05:29,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 23:05:29,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:05:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:05:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2023-02-18 23:05:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:05:29,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818879828] [2023-02-18 23:05:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:05:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:05:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:05:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:05:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:05:29,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818879828] [2023-02-18 23:05:29,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818879828] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:05:29,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:05:29,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:05:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742654508] [2023-02-18 23:05:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:05:29,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:05:29,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:05:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:05:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:05:29,322 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-02-18 23:05:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:05:29,378 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-02-18 23:05:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:05:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2023-02-18 23:05:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:05:29,384 INFO L225 Difference]: With dead ends: 32 [2023-02-18 23:05:29,384 INFO L226 Difference]: Without dead ends: 13 [2023-02-18 23:05:29,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:05:29,388 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:05:29,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 13 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:05:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-18 23:05:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-18 23:05:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 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) [2023-02-18 23:05:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-02-18 23:05:29,424 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2023-02-18 23:05:29,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:05:29,441 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-02-18 23:05:29,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-02-18 23:05:29,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-02-18 23:05:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 23:05:29,441 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:05:29,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 23:05:29,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 23:05:29,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:05:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:05:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2023-02-18 23:05:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:05:29,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865436562] [2023-02-18 23:05:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:05:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:05:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 23:05:29,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 23:05:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 23:05:29,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 23:05:29,470 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 23:05:29,471 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-02-18 23:05:29,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-02-18 23:05:29,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-02-18 23:05:29,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-02-18 23:05:29,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 23:05:29,477 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-02-18 23:05:29,479 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 23:05:29,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 11:05:29 BoogieIcfgContainer [2023-02-18 23:05:29,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 23:05:29,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 23:05:29,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 23:05:29,504 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 23:05:29,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:05:29" (3/4) ... [2023-02-18 23:05:29,505 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 23:05:29,531 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 23:05:29,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 23:05:29,532 INFO L158 Benchmark]: Toolchain (without parser) took 850.61ms. Allocated memory is still 184.5MB. Free memory was 117.0MB in the beginning and 116.3MB in the end (delta: 628.6kB). Peak memory consumption was 270.8kB. Max. memory is 16.1GB. [2023-02-18 23:05:29,532 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 23:05:29,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.04ms. Allocated memory is still 184.5MB. Free memory was 116.9MB in the beginning and 154.2MB in the end (delta: -37.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-18 23:05:29,533 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.82ms. Allocated memory is still 184.5MB. Free memory was 154.2MB in the beginning and 152.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 23:05:29,533 INFO L158 Benchmark]: Boogie Preprocessor took 23.86ms. Allocated memory is still 184.5MB. Free memory was 152.8MB in the beginning and 151.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 23:05:29,536 INFO L158 Benchmark]: RCFGBuilder took 181.87ms. Allocated memory is still 184.5MB. Free memory was 151.6MB in the beginning and 142.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 23:05:29,536 INFO L158 Benchmark]: TraceAbstraction took 420.28ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 118.0MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-02-18 23:05:29,536 INFO L158 Benchmark]: Witness Printer took 28.15ms. Allocated memory is still 184.5MB. Free memory was 118.0MB in the beginning and 116.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 23:05:29,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.04ms. Allocated memory is still 184.5MB. Free memory was 116.9MB in the beginning and 154.2MB in the end (delta: -37.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.82ms. Allocated memory is still 184.5MB. Free memory was 154.2MB in the beginning and 152.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.86ms. Allocated memory is still 184.5MB. Free memory was 152.8MB in the beginning and 151.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 181.87ms. Allocated memory is still 184.5MB. Free memory was 151.6MB in the beginning and 142.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 420.28ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 118.0MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 28.15ms. Allocated memory is still 184.5MB. Free memory was 118.0MB in the beginning and 116.3MB in the end (delta: 1.7MB). 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 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x