./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 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/cstrncmp.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 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:24:05,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:24:05,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:24:05,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:24:05,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:24:05,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:24:05,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:24:05,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:24:05,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:24:05,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:24:05,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:24:05,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:24:05,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:24:05,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:24:05,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:24:06,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:24:06,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:24:06,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:24:06,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:24:06,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:24:06,011 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:24:06,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:24:06,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:24:06,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:24:06,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:24:06,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:24:06,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:24:06,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:24:06,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:24:06,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:24:06,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:24:06,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:24:06,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:24:06,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:24:06,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:24:06,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:24:06,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:24:06,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:24:06,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:24:06,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:24:06,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:24:06,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:24:06,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-23 13:24:06,065 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:24:06,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:24:06,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:24:06,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:24:06,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:24:06,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:24:06,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:24:06,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:24:06,068 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:24:06,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:24:06,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:24:06,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:24:06,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:24:06,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:24:06,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:24:06,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:24:06,070 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:24:06,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:24:06,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:24:06,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:24:06,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:24:06,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:24:06,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:24:06,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:24:06,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:24:06,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:24:06,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:24:06,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:24:06,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:24:06,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:24:06,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf [2022-07-23 13:24:06,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:24:06,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:24:06,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:24:06,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:24:06,337 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:24:06,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2022-07-23 13:24:06,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0773eeb0/925c92ce57e740f1bc0d7a976c0917e3/FLAG1e190394d [2022-07-23 13:24:06,823 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:24:06,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2022-07-23 13:24:06,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0773eeb0/925c92ce57e740f1bc0d7a976c0917e3/FLAG1e190394d [2022-07-23 13:24:07,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0773eeb0/925c92ce57e740f1bc0d7a976c0917e3 [2022-07-23 13:24:07,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:24:07,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:24:07,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:24:07,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:24:07,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:24:07,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbaddc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07, skipping insertion in model container [2022-07-23 13:24:07,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:24:07,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:24:07,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:24:07,396 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:24:07,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:24:07,426 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:24:07,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07 WrapperNode [2022-07-23 13:24:07,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:24:07,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:24:07,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:24:07,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:24:07,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,463 INFO L137 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2022-07-23 13:24:07,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:24:07,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:24:07,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:24:07,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:24:07,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:24:07,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:24:07,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:24:07,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:24:07,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (1/1) ... [2022-07-23 13:24:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:24:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:24:07,549 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) [2022-07-23 13:24:07,579 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 [2022-07-23 13:24:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 13:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2022-07-23 13:24:07,596 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2022-07-23 13:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 13:24:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:24:07,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:24:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 13:24:07,653 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:24:07,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:24:07,772 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:24:07,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:24:07,778 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 13:24:07,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:07 BoogieIcfgContainer [2022-07-23 13:24:07,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:24:07,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:24:07,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:24:07,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:24:07,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:24:07" (1/3) ... [2022-07-23 13:24:07,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b83c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:24:07, skipping insertion in model container [2022-07-23 13:24:07,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:24:07" (2/3) ... [2022-07-23 13:24:07,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b83c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:24:07, skipping insertion in model container [2022-07-23 13:24:07,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:07" (3/3) ... [2022-07-23 13:24:07,798 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2022-07-23 13:24:07,810 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:24:07,810 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-23 13:24:07,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:24:07,867 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@2079ef60, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b6bf244 [2022-07-23 13:24:07,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-23 13:24:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:24:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:24:07,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:07,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:07,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:24:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:07,895 INFO L85 PathProgramCache]: Analyzing trace with hash 890466664, now seen corresponding path program 1 times [2022-07-23 13:24:07,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:07,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640087440] [2022-07-23 13:24:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:08,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640087440] [2022-07-23 13:24:08,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640087440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:24:08,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:24:08,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:24:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509963547] [2022-07-23 13:24:08,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:24:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:24:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:08,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:24:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:24:08,123 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:08,200 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-07-23 13:24:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:24:08,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 13:24:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:08,209 INFO L225 Difference]: With dead ends: 44 [2022-07-23 13:24:08,210 INFO L226 Difference]: Without dead ends: 29 [2022-07-23 13:24:08,212 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 [2022-07-23 13:24:08,217 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:08,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 64 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:24:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-23 13:24:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-07-23 13:24:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:24:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-07-23 13:24:08,288 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2022-07-23 13:24:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:08,289 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-07-23 13:24:08,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-07-23 13:24:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:24:08,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:08,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:08,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:24:08,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:24:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash 890468586, now seen corresponding path program 1 times [2022-07-23 13:24:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:08,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421495248] [2022-07-23 13:24:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:08,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421495248] [2022-07-23 13:24:08,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421495248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:24:08,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:24:08,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:24:08,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688648243] [2022-07-23 13:24:08,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:24:08,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:24:08,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:08,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:24:08,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:24:08,332 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:08,361 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-07-23 13:24:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:24:08,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 13:24:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:08,363 INFO L225 Difference]: With dead ends: 26 [2022-07-23 13:24:08,364 INFO L226 Difference]: Without dead ends: 25 [2022-07-23 13:24:08,365 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 [2022-07-23 13:24:08,367 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:08,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 40 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:24:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-23 13:24:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-23 13:24:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:24:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-23 13:24:08,378 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2022-07-23 13:24:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:08,378 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-23 13:24:08,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-23 13:24:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:24:08,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:08,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:08,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:24:08,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:24:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1834662849, now seen corresponding path program 1 times [2022-07-23 13:24:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:08,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004523617] [2022-07-23 13:24:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:08,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004523617] [2022-07-23 13:24:08,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004523617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:24:08,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:24:08,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:24:08,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618038403] [2022-07-23 13:24:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:24:08,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:24:08,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:24:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:24:08,448 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:08,457 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-07-23 13:24:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:24:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 13:24:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:08,458 INFO L225 Difference]: With dead ends: 23 [2022-07-23 13:24:08,459 INFO L226 Difference]: Without dead ends: 22 [2022-07-23 13:24:08,459 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 [2022-07-23 13:24:08,460 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:08,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:24:08,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-23 13:24:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-23 13:24:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:24:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-23 13:24:08,465 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2022-07-23 13:24:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:08,465 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-23 13:24:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-23 13:24:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-23 13:24:08,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:08,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:08,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:24:08,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:24:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 868575071, now seen corresponding path program 1 times [2022-07-23 13:24:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:08,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841518125] [2022-07-23 13:24:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:24:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:24:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 13:24:08,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:08,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841518125] [2022-07-23 13:24:08,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841518125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:24:08,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:24:08,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:24:08,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675564767] [2022-07-23 13:24:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:24:08,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:24:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:24:08,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:24:08,637 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:24:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:08,681 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-07-23 13:24:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:24:08,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-07-23 13:24:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:08,683 INFO L225 Difference]: With dead ends: 22 [2022-07-23 13:24:08,683 INFO L226 Difference]: Without dead ends: 21 [2022-07-23 13:24:08,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:24:08,693 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:08,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:24:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-23 13:24:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-23 13:24:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:24:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-07-23 13:24:08,705 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 22 [2022-07-23 13:24:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:08,706 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-07-23 13:24:08,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:24:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-07-23 13:24:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 13:24:08,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:08,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:24:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:24:08,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:24:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1156023487, now seen corresponding path program 1 times [2022-07-23 13:24:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:08,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925156526] [2022-07-23 13:24:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:08,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 13:24:08,755 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 13:24:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 13:24:08,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 13:24:08,791 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-23 13:24:08,792 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-07-23 13:24:08,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-07-23 13:24:08,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-07-23 13:24:08,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-07-23 13:24:08,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 13:24:08,799 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-23 13:24:08,802 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 13:24:08,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:24:08 BoogieIcfgContainer [2022-07-23 13:24:08,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 13:24:08,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 13:24:08,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 13:24:08,829 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 13:24:08,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:24:07" (3/4) ... [2022-07-23 13:24:08,831 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-23 13:24:08,870 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 13:24:08,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 13:24:08,874 INFO L158 Benchmark]: Toolchain (without parser) took 1652.37ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 50.1MB in the beginning and 67.9MB in the end (delta: -17.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:08,874 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:08,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.20ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 49.8MB in the beginning and 75.0MB in the end (delta: -25.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-07-23 13:24:08,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.46ms. Allocated memory is still 98.6MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:08,876 INFO L158 Benchmark]: Boogie Preprocessor took 47.65ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 72.5MB in the end (delta: 882.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:08,876 INFO L158 Benchmark]: RCFGBuilder took 265.19ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 61.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 13:24:08,876 INFO L158 Benchmark]: TraceAbstraction took 1047.21ms. Allocated memory is still 98.6MB. Free memory was 60.5MB in the beginning and 70.0MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:24:08,877 INFO L158 Benchmark]: Witness Printer took 44.42ms. Allocated memory is still 98.6MB. Free memory was 70.0MB in the beginning and 67.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:24:08,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.20ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 49.8MB in the beginning and 75.0MB in the end (delta: -25.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.46ms. Allocated memory is still 98.6MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.65ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 72.5MB in the end (delta: 882.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.19ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 61.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1047.21ms. Allocated memory is still 98.6MB. Free memory was 60.5MB in the beginning and 70.0MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.42ms. Allocated memory is still 98.6MB. Free memory was 70.0MB in the beginning and 67.9MB 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: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; VAL [\result={-1:0}, length=1, nondetString={-1:0}] [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}] [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; VAL [\result={-2:0}, length=1, nondetString={-2:0}] [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-2:0}, build_nondet_String()={-1:0}] [L47] CALL cstrncmp(build_nondet_String(),build_nondet_String(),__VERIFIER_nondet_int()) [L28] unsigned char uc1, uc2; VAL [\old(n)=-2147483648, n=-2147483648, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}] [L30] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}] [L33] n-- VAL [\old(n)=-2147483648, n=-2147483648, n--=-2147483648, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 96 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 7/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-23 13:24:08,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)