./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Addition02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 02:33:22,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 02:33:22,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 02:33:22,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 02:33:22,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 02:33:22,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 02:33:22,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 02:33:22,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 02:33:22,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 02:33:22,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 02:33:22,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 02:33:22,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 02:33:22,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 02:33:22,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 02:33:22,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 02:33:22,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 02:33:22,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 02:33:22,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 02:33:22,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 02:33:22,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 02:33:22,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 02:33:22,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 02:33:22,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 02:33:22,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 02:33:22,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 02:33:22,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 02:33:22,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 02:33:22,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 02:33:22,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 02:33:22,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 02:33:22,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 02:33:22,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 02:33:22,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 02:33:22,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 02:33:22,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 02:33:22,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 02:33:22,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 02:33:22,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 02:33:22,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 02:33:22,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 02:33:22,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 02:33:22,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 02:33:22,797 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 02:33:22,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 02:33:22,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 02:33:22,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 02:33:22,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 02:33:22,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 02:33:22,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 02:33:22,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 02:33:22,799 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 02:33:22,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 02:33:22,800 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 02:33:22,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 02:33:22,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 02:33:22,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 02:33:22,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 02:33:22,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 02:33:22,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 02:33:22,801 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 02:33:22,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 02:33:22,801 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 02:33:22,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 02:33:22,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 02:33:22,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 02:33:22,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 02:33:22,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:33:22,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 02:33:22,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 02:33:22,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 02:33:22,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 02:33:22,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 02:33:22,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 02:33:22,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 02:33:22,803 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 02:33:22,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 02:33:22,804 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 02:33:22,804 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 [2023-02-17 02:33:23,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 02:33:23,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 02:33:23,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 02:33:23,030 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 02:33:23,033 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 02:33:23,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition02.c [2023-02-17 02:33:24,289 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 02:33:24,430 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 02:33:24,430 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition02.c [2023-02-17 02:33:24,434 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36333360d/e320e10a828f46c197202e5800d7acb4/FLAGdbceed532 [2023-02-17 02:33:24,447 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36333360d/e320e10a828f46c197202e5800d7acb4 [2023-02-17 02:33:24,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 02:33:24,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 02:33:24,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 02:33:24,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 02:33:24,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 02:33:24,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d615131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24, skipping insertion in model container [2023-02-17 02:33:24,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 02:33:24,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 02:33:24,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2023-02-17 02:33:24,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:33:24,609 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 02:33:24,620 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2023-02-17 02:33:24,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:33:24,629 INFO L208 MainTranslator]: Completed translation [2023-02-17 02:33:24,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24 WrapperNode [2023-02-17 02:33:24,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 02:33:24,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 02:33:24,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 02:33:24,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 02:33:24,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,648 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2023-02-17 02:33:24,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 02:33:24,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 02:33:24,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 02:33:24,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 02:33:24,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 02:33:24,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 02:33:24,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 02:33:24,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 02:33:24,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (1/1) ... [2023-02-17 02:33:24,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:33:24,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:24,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 02:33:24,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 02:33:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 02:33:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 02:33:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 02:33:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 02:33:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2023-02-17 02:33:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2023-02-17 02:33:24,782 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 02:33:24,785 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 02:33:24,942 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 02:33:24,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 02:33:24,948 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 02:33:24,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:33:24 BoogieIcfgContainer [2023-02-17 02:33:24,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 02:33:24,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 02:33:24,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 02:33:24,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 02:33:24,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:33:24" (1/3) ... [2023-02-17 02:33:24,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6611b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:33:24, skipping insertion in model container [2023-02-17 02:33:24,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:24" (2/3) ... [2023-02-17 02:33:24,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6611b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:33:24, skipping insertion in model container [2023-02-17 02:33:24,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:33:24" (3/3) ... [2023-02-17 02:33:24,958 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition02.c [2023-02-17 02:33:24,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 02:33:24,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 02:33:25,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 02:33:25,081 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f86e57f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 02:33:25,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 02:33:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 02:33:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 02:33:25,092 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:25,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:25,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash 663264039, now seen corresponding path program 1 times [2023-02-17 02:33:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395105935] [2023-02-17 02:33:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 02:33:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:33:25,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:25,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395105935] [2023-02-17 02:33:25,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395105935] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:33:25,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:33:25,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 02:33:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851617611] [2023-02-17 02:33:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:33:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 02:33:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 02:33:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 02:33:25,522 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:25,640 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-17 02:33:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 02:33:25,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-17 02:33:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:25,648 INFO L225 Difference]: With dead ends: 34 [2023-02-17 02:33:25,648 INFO L226 Difference]: Without dead ends: 21 [2023-02-17 02:33:25,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-17 02:33:25,653 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:25,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 62 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-17 02:33:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-17 02:33:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 02:33:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-02-17 02:33:25,684 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2023-02-17 02:33:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:25,685 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-02-17 02:33:25,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-02-17 02:33:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 02:33:25,686 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:25,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:25,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 02:33:25,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1508496640, now seen corresponding path program 1 times [2023-02-17 02:33:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:25,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556570204] [2023-02-17 02:33:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 02:33:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:33:25,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:25,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556570204] [2023-02-17 02:33:25,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556570204] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:33:25,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:33:25,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 02:33:25,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877018792] [2023-02-17 02:33:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:33:25,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 02:33:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:25,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 02:33:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 02:33:25,825 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:25,881 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2023-02-17 02:33:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 02:33:25,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-02-17 02:33:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:25,882 INFO L225 Difference]: With dead ends: 32 [2023-02-17 02:33:25,882 INFO L226 Difference]: Without dead ends: 18 [2023-02-17 02:33:25,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 02:33:25,883 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:25,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 39 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-17 02:33:25,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-17 02:33:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 02:33:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-02-17 02:33:25,889 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2023-02-17 02:33:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:25,889 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-02-17 02:33:25,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-02-17 02:33:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 02:33:25,890 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:25,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 02:33:25,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1330690599, now seen corresponding path program 1 times [2023-02-17 02:33:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755132670] [2023-02-17 02:33:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 02:33:25,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 02:33:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 02:33:25,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 02:33:25,956 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 02:33:25,957 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 02:33:25,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 02:33:25,961 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-17 02:33:25,965 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 02:33:25,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 02:33:25 BoogieIcfgContainer [2023-02-17 02:33:25,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 02:33:26,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 02:33:26,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 02:33:26,012 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 02:33:26,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:33:24" (3/4) ... [2023-02-17 02:33:26,015 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-17 02:33:26,083 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 02:33:26,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 02:33:26,117 INFO L158 Benchmark]: Toolchain (without parser) took 1665.30ms. Allocated memory was 119.5MB in the beginning and 167.8MB in the end (delta: 48.2MB). Free memory was 59.2MB in the beginning and 137.8MB in the end (delta: -78.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:33:26,118 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:33:26,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.79ms. Allocated memory was 119.5MB in the beginning and 167.8MB in the end (delta: 48.2MB). Free memory was 59.0MB in the beginning and 132.1MB in the end (delta: -73.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2023-02-17 02:33:26,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.73ms. Allocated memory is still 167.8MB. Free memory was 132.1MB in the beginning and 130.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 02:33:26,119 INFO L158 Benchmark]: Boogie Preprocessor took 10.66ms. Allocated memory is still 167.8MB. Free memory was 130.5MB in the beginning and 129.6MB in the end (delta: 950.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:33:26,119 INFO L158 Benchmark]: RCFGBuilder took 290.25ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 120.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 02:33:26,120 INFO L158 Benchmark]: TraceAbstraction took 1047.09ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 112.6MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-17 02:33:26,120 INFO L158 Benchmark]: Witness Printer took 116.50ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 137.8MB in the end (delta: -25.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-17 02:33:26,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 175.79ms. Allocated memory was 119.5MB in the beginning and 167.8MB in the end (delta: 48.2MB). Free memory was 59.0MB in the beginning and 132.1MB in the end (delta: -73.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.73ms. Allocated memory is still 167.8MB. Free memory was 132.1MB in the beginning and 130.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.66ms. Allocated memory is still 167.8MB. Free memory was 130.5MB in the beginning and 129.6MB in the end (delta: 950.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 290.25ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 120.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1047.09ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 112.6MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Witness Printer took 116.50ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 137.8MB in the end (delta: -25.2MB). Peak memory consumption was 4.2MB. 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: 45]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] COND FALSE !(m < 0 || m > 1073741823) [L35] int n = __VERIFIER_nondet_int(); [L36] COND FALSE !(n < 0 || n > 1073741823) VAL [m=0, n=1] [L41] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L16] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L19] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L20] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L16] COND TRUE n == 0 [L17] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L20] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L20] return addition(m+1, n-1); [L41] RET, EXPR addition(m,n) VAL [addition(m,n)=1, m=0, n=1] [L41] int result = addition(m,n); [L42] COND FALSE !(result == m - n) VAL [m=0, n=1, result=1] [L45] reach_error() VAL [m=0, n=1, result=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 117 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 35 mSDtfsCounter, 117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-17 02:33:26,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE