./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c 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/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c -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 6c672e39437b64d6e9cb9cb97996c418b00fa547966c3f2e660d54aae5ea7064 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 08:14:42,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 08:14:42,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 08:14:42,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 08:14:42,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 08:14:42,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 08:14:42,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 08:14:42,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 08:14:42,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 08:14:42,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 08:14:42,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 08:14:42,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 08:14:42,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 08:14:42,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 08:14:42,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 08:14:42,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 08:14:42,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 08:14:42,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 08:14:42,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 08:14:42,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 08:14:42,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 08:14:42,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 08:14:42,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 08:14:42,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 08:14:42,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 08:14:42,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 08:14:42,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 08:14:42,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 08:14:42,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 08:14:42,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 08:14:42,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 08:14:42,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 08:14:42,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 08:14:42,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 08:14:42,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 08:14:42,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 08:14:42,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 08:14:42,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 08:14:42,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 08:14:42,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 08:14:42,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 08:14:42,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 08:14:42,910 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 08:14:42,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 08:14:42,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 08:14:42,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 08:14:42,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 08:14:42,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 08:14:42,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 08:14:42,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 08:14:42,913 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 08:14:42,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 08:14:42,914 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 08:14:42,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 08:14:42,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 08:14:42,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 08:14:42,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 08:14:42,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 08:14:42,916 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 08:14:42,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 08:14:42,916 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 08:14:42,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 08:14:42,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 08:14:42,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 08:14:42,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 08:14:42,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:14:42,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 08:14:42,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 08:14:42,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 08:14:42,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 08:14:42,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 08:14:42,918 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 08:14:42,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 08:14:42,918 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 08:14:42,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 08:14:42,919 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 08:14:42,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c672e39437b64d6e9cb9cb97996c418b00fa547966c3f2e660d54aae5ea7064 [2023-02-18 08:14:43,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 08:14:43,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 08:14:43,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 08:14:43,184 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 08:14:43,185 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 08:14:43,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c [2023-02-18 08:14:44,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 08:14:44,448 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 08:14:44,449 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c [2023-02-18 08:14:44,453 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbcae83f0/b4bdb179555a492195bbb011f9e16f84/FLAGd58cb2826 [2023-02-18 08:14:44,472 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbcae83f0/b4bdb179555a492195bbb011f9e16f84 [2023-02-18 08:14:44,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 08:14:44,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 08:14:44,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 08:14:44,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 08:14:44,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 08:14:44,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2e904f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44, skipping insertion in model container [2023-02-18 08:14:44,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 08:14:44,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 08:14:44,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:14:44,617 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 08:14:44,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:14:44,642 INFO L208 MainTranslator]: Completed translation [2023-02-18 08:14:44,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44 WrapperNode [2023-02-18 08:14:44,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 08:14:44,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 08:14:44,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 08:14:44,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 08:14:44,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,674 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2023-02-18 08:14:44,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 08:14:44,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 08:14:44,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 08:14:44,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 08:14:44,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 08:14:44,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 08:14:44,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 08:14:44,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 08:14:44,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (1/1) ... [2023-02-18 08:14:44,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:14:44,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:14:44,734 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 08:14:44,742 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 08:14:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 08:14:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 08:14:44,832 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 08:14:44,834 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 08:14:44,977 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 08:14:44,982 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 08:14:44,983 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 08:14:44,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:14:44 BoogieIcfgContainer [2023-02-18 08:14:44,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 08:14:44,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 08:14:44,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 08:14:44,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 08:14:44,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 08:14:44" (1/3) ... [2023-02-18 08:14:44,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25963862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:14:44, skipping insertion in model container [2023-02-18 08:14:44,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:14:44" (2/3) ... [2023-02-18 08:14:44,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25963862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:14:44, skipping insertion in model container [2023-02-18 08:14:44,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:14:44" (3/3) ... [2023-02-18 08:14:45,001 INFO L112 eAbstractionObserver]: Analyzing ICFG NoriSharma-FSE2013-Fig7.c [2023-02-18 08:14:45,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 08:14:45,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-18 08:14:45,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 08:14:45,071 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;@da27550, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 08:14:45,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-18 08:14:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 states have internal predecessors, (20), 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 08:14:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-18 08:14:45,081 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:14:45,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-18 08:14:45,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:14:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:14:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2023-02-18 08:14:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:14:45,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564089910] [2023-02-18 08:14:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:14:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:14:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:14:45,242 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 08:14:45,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:14:45,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564089910] [2023-02-18 08:14:45,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564089910] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:14:45,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:14:45,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 08:14:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191121817] [2023-02-18 08:14:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:14:45,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 08:14:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:14:45,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 08:14:45,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:14:45,279 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 states have internal predecessors, (20), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 08:14:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:14:45,318 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2023-02-18 08:14:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 08:14:45,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-02-18 08:14:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:14:45,327 INFO L225 Difference]: With dead ends: 23 [2023-02-18 08:14:45,327 INFO L226 Difference]: Without dead ends: 14 [2023-02-18 08:14:45,330 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 08:14:45,333 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:14:45,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:14:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-18 08:14:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-18 08:14:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 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 08:14:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-02-18 08:14:45,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2023-02-18 08:14:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:14:45,362 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-02-18 08:14:45,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 08:14:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-02-18 08:14:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 08:14:45,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:14:45,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 08:14:45,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 08:14:45,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:14:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:14:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2023-02-18 08:14:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:14:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100964859] [2023-02-18 08:14:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:14:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:14:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:14:45,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:14:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:14:45,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:14:45,419 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 08:14:45,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-02-18 08:14:45,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-02-18 08:14:45,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-02-18 08:14:45,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-02-18 08:14:45,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-02-18 08:14:45,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-02-18 08:14:45,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 08:14:45,426 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-02-18 08:14:45,430 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 08:14:45,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 08:14:45 BoogieIcfgContainer [2023-02-18 08:14:45,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 08:14:45,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 08:14:45,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 08:14:45,445 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 08:14:45,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:14:44" (3/4) ... [2023-02-18 08:14:45,447 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 08:14:45,474 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 08:14:45,474 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 08:14:45,475 INFO L158 Benchmark]: Toolchain (without parser) took 998.42ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 104.2MB in the end (delta: -10.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:14:45,475 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 70.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:14:45,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.67ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 84.3MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 08:14:45,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.03ms. Allocated memory is still 136.3MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 08:14:45,477 INFO L158 Benchmark]: Boogie Preprocessor took 24.40ms. Allocated memory is still 136.3MB. Free memory was 82.9MB in the beginning and 82.2MB in the end (delta: 750.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:14:45,477 INFO L158 Benchmark]: RCFGBuilder took 283.23ms. Allocated memory is still 136.3MB. Free memory was 81.8MB in the beginning and 72.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 08:14:45,478 INFO L158 Benchmark]: TraceAbstraction took 458.49ms. Allocated memory is still 136.3MB. Free memory was 72.1MB in the beginning and 106.3MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:14:45,478 INFO L158 Benchmark]: Witness Printer took 29.15ms. Allocated memory is still 136.3MB. Free memory was 106.3MB in the beginning and 104.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 08:14:45,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 70.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.67ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 84.3MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.03ms. Allocated memory is still 136.3MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.40ms. Allocated memory is still 136.3MB. Free memory was 82.9MB in the beginning and 82.2MB in the end (delta: 750.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 283.23ms. Allocated memory is still 136.3MB. Free memory was 81.8MB in the beginning and 72.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 458.49ms. Allocated memory is still 136.3MB. Free memory was 72.1MB in the beginning and 106.3MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.15ms. Allocated memory is still 136.3MB. Free memory was 106.3MB in the beginning and 104.2MB in the end (delta: 2.1MB). 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: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int a, b, c, i, j, M, N; [L16] i = __VERIFIER_nondet_int() [L17] j = __VERIFIER_nondet_int() [L18] M = __VERIFIER_nondet_int() [L19] N = __VERIFIER_nondet_int() [L20] a = i [L21] b = j [L22] c = 0 VAL [a=2147483647, b=0, c=0, i=2147483647, j=0, M=0, N=1] [L23] COND TRUE i