./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 f4b24e32 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-?-f4b24e3 [2022-07-14 13:46:16,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:46:16,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:46:16,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:46:16,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:46:16,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:46:16,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:46:16,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:46:16,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:46:16,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:46:16,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:46:16,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:46:16,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:46:16,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:46:16,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:46:16,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:46:16,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:46:16,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:46:16,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:46:16,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:46:16,517 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:46:16,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:46:16,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:46:16,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:46:16,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:46:16,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:46:16,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:46:16,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:46:16,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:46:16,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:46:16,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:46:16,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:46:16,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:46:16,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:46:16,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:46:16,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:46:16,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:46:16,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:46:16,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:46:16,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:46:16,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:46:16,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:46:16,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-14 13:46:16,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:46:16,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:46:16,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:46:16,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:46:16,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:46:16,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:46:16,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:46:16,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:46:16,573 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:46:16,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:46:16,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:46:16,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:46:16,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:46:16,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 13:46:16,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:46:16,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 13:46:16,575 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 13:46:16,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 13:46:16,576 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:46:16,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 13:46:16,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:46:16,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:46:16,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:46:16,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:46:16,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:46:16,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:46:16,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 13:46:16,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 13:46:16,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 13:46:16,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 13:46:16,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c672e39437b64d6e9cb9cb97996c418b00fa547966c3f2e660d54aae5ea7064 [2022-07-14 13:46:16,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:46:16,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:46:16,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:46:16,799 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:46:16,799 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:46:16,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c [2022-07-14 13:46:16,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e8d5e98/1e3e6fcd8628445785ea4caf02962892/FLAGe8774c180 [2022-07-14 13:46:17,234 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:46:17,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/NoriSharma-FSE2013-Fig7.c [2022-07-14 13:46:17,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e8d5e98/1e3e6fcd8628445785ea4caf02962892/FLAGe8774c180 [2022-07-14 13:46:17,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e8d5e98/1e3e6fcd8628445785ea4caf02962892 [2022-07-14 13:46:17,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:46:17,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:46:17,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:46:17,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:46:17,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:46:17,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d620da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17, skipping insertion in model container [2022-07-14 13:46:17,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:46:17,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:46:17,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:46:17,402 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 13:46:17,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:46:17,422 INFO L208 MainTranslator]: Completed translation [2022-07-14 13:46:17,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17 WrapperNode [2022-07-14 13:46:17,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:46:17,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 13:46:17,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 13:46:17,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 13:46:17,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,446 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2022-07-14 13:46:17,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 13:46:17,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 13:46:17,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 13:46:17,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 13:46:17,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 13:46:17,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 13:46:17,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 13:46:17,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 13:46:17,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (1/1) ... [2022-07-14 13:46:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:46:17,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:46:17,496 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) [2022-07-14 13:46:17,514 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 [2022-07-14 13:46:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 13:46:17,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 13:46:17,590 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 13:46:17,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 13:46:17,670 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 13:46:17,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 13:46:17,676 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 13:46:17,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:46:17 BoogieIcfgContainer [2022-07-14 13:46:17,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 13:46:17,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 13:46:17,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 13:46:17,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 13:46:17,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:46:17" (1/3) ... [2022-07-14 13:46:17,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687a9ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:46:17, skipping insertion in model container [2022-07-14 13:46:17,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:17" (2/3) ... [2022-07-14 13:46:17,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687a9ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:46:17, skipping insertion in model container [2022-07-14 13:46:17,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:46:17" (3/3) ... [2022-07-14 13:46:17,684 INFO L111 eAbstractionObserver]: Analyzing ICFG NoriSharma-FSE2013-Fig7.c [2022-07-14 13:46:17,696 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 13:46:17,697 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-14 13:46:17,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 13:46:17,738 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b37c0ae, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@767ccee8 [2022-07-14 13:46:17,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-14 13:46:17,741 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) [2022-07-14 13:46:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 13:46:17,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:17,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 13:46:17,747 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)] === [2022-07-14 13:46:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2022-07-14 13:46:17,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:17,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568626857] [2022-07-14 13:46:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 13:46:17,831 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 13:46:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 13:46:17,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 13:46:17,852 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 13:46:17,852 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-07-14 13:46:17,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-07-14 13:46:17,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-07-14 13:46:17,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-07-14 13:46:17,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-07-14 13:46:17,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-07-14 13:46:17,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 13:46:17,865 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-14 13:46:17,870 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 13:46:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 01:46:17 BoogieIcfgContainer [2022-07-14 13:46:17,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 13:46:17,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 13:46:17,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 13:46:17,895 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 13:46:17,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:46:17" (3/4) ... [2022-07-14 13:46:17,897 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-14 13:46:17,943 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 13:46:17,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 13:46:17,944 INFO L158 Benchmark]: Toolchain (without parser) took 693.71ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.6MB in the beginning and 55.8MB in the end (delta: -4.2MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-07-14 13:46:17,945 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 55.4MB in the beginning and 55.3MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 13:46:17,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.65ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 82.6MB in the end (delta: -31.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-14 13:46:17,952 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.16ms. Allocated memory is still 104.9MB. Free memory was 82.6MB in the beginning and 81.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 13:46:17,953 INFO L158 Benchmark]: Boogie Preprocessor took 18.69ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 13:46:17,953 INFO L158 Benchmark]: RCFGBuilder took 210.55ms. Allocated memory is still 104.9MB. Free memory was 80.3MB in the beginning and 71.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 13:46:17,953 INFO L158 Benchmark]: TraceAbstraction took 213.06ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 57.3MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-14 13:46:17,954 INFO L158 Benchmark]: Witness Printer took 48.91ms. Allocated memory is still 104.9MB. Free memory was 57.3MB in the beginning and 55.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 13:46:17,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 55.4MB in the beginning and 55.3MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.65ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 82.6MB in the end (delta: -31.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.16ms. Allocated memory is still 104.9MB. Free memory was 82.6MB in the beginning and 81.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.69ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 210.55ms. Allocated memory is still 104.9MB. Free memory was 80.3MB in the beginning and 71.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 213.06ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 57.3MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 48.91ms. Allocated memory is still 104.9MB. Free memory was 57.3MB in the beginning and 55.8MB in the end (delta: 1.4MB). 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: [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=-1, c=0, i=2147483647, j=-1, M=0, N=0] [L23] COND TRUE i