./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_b3_o5-2.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-simple/id_b3_o5-2.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 621898048ba1a114e9dcad9e5710c657610f8003e8ee1fe56040431e90585894 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 04:34:52,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 04:34:52,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 04:34:52,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 04:34:52,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 04:34:52,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 04:34:52,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 04:34:52,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 04:34:52,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 04:34:52,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 04:34:52,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 04:34:52,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 04:34:52,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 04:34:52,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 04:34:52,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 04:34:52,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 04:34:52,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 04:34:52,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 04:34:52,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 04:34:52,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 04:34:52,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 04:34:52,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 04:34:52,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 04:34:52,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 04:34:52,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 04:34:52,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 04:34:52,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 04:34:52,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 04:34:52,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 04:34:52,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 04:34:52,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 04:34:52,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 04:34:52,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 04:34:52,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 04:34:52,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 04:34:52,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 04:34:52,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 04:34:52,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 04:34:52,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 04:34:52,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 04:34:52,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 04:34:52,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 04:34:52,404 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 04:34:52,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 04:34:52,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 04:34:52,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 04:34:52,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 04:34:52,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 04:34:52,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 04:34:52,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 04:34:52,406 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 04:34:52,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 04:34:52,407 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 04:34:52,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 04:34:52,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 04:34:52,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 04:34:52,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 04:34:52,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 04:34:52,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 04:34:52,408 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 04:34:52,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 04:34:52,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 04:34:52,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 04:34:52,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 04:34:52,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 04:34:52,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 04:34:52,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:34:52,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 04:34:52,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 04:34:52,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 04:34:52,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 04:34:52,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 04:34:52,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 04:34:52,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 04:34:52,411 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 04:34:52,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 04:34:52,411 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 04:34:52,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621898048ba1a114e9dcad9e5710c657610f8003e8ee1fe56040431e90585894 [2023-02-18 04:34:52,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 04:34:52,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 04:34:52,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 04:34:52,627 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 04:34:52,628 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 04:34:52,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2023-02-18 04:34:53,609 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 04:34:53,749 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 04:34:53,750 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2023-02-18 04:34:53,756 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfcec66e/faf8acddc8e347c4865aae4b8ffa577d/FLAG69d891ac0 [2023-02-18 04:34:53,769 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfcec66e/faf8acddc8e347c4865aae4b8ffa577d [2023-02-18 04:34:53,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 04:34:53,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 04:34:53,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 04:34:53,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 04:34:53,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 04:34:53,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c1b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53, skipping insertion in model container [2023-02-18 04:34:53,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 04:34:53,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:34:53,887 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-simple/id_b3_o5-2.c[528,541] [2023-02-18 04:34:53,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:34:53,897 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 04:34:53,906 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-simple/id_b3_o5-2.c[528,541] [2023-02-18 04:34:53,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:34:53,915 INFO L208 MainTranslator]: Completed translation [2023-02-18 04:34:53,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53 WrapperNode [2023-02-18 04:34:53,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 04:34:53,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 04:34:53,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 04:34:53,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 04:34:53,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,936 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-02-18 04:34:53,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 04:34:53,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 04:34:53,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 04:34:53,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 04:34:53,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 04:34:53,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 04:34:53,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 04:34:53,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 04:34:53,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (1/1) ... [2023-02-18 04:34:53,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:34:53,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:34:53,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 04:34:53,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 04:34:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 04:34:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 04:34:54,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 04:34:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 04:34:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-02-18 04:34:54,015 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-02-18 04:34:54,062 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 04:34:54,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 04:34:54,219 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 04:34:54,223 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 04:34:54,223 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 04:34:54,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:34:54 BoogieIcfgContainer [2023-02-18 04:34:54,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 04:34:54,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 04:34:54,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 04:34:54,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 04:34:54,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:34:53" (1/3) ... [2023-02-18 04:34:54,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43477d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:34:54, skipping insertion in model container [2023-02-18 04:34:54,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:34:53" (2/3) ... [2023-02-18 04:34:54,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43477d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:34:54, skipping insertion in model container [2023-02-18 04:34:54,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:34:54" (3/3) ... [2023-02-18 04:34:54,230 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2023-02-18 04:34:54,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 04:34:54,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 04:34:54,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 04:34:54,275 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;@34f5f4d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 04:34:54,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 04:34:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2023-02-18 04:34:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 04:34:54,283 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:34:54,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:34:54,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:34:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:34:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1972897208, now seen corresponding path program 1 times [2023-02-18 04:34:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:34:54,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204040651] [2023-02-18 04:34:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:34:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:34:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:34:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:34:54,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:34:54,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204040651] [2023-02-18 04:34:54,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204040651] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:34:54,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:34:54,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 04:34:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757081160] [2023-02-18 04:34:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:34:54,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:34:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:34:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:34:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:34:54,492 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-18 04:34:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:34:54,531 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-02-18 04:34:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:34:54,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-02-18 04:34:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:34:54,539 INFO L225 Difference]: With dead ends: 29 [2023-02-18 04:34:54,539 INFO L226 Difference]: Without dead ends: 16 [2023-02-18 04:34:54,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:34:54,544 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:34:54,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 60 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:34:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-18 04:34:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-18 04:34:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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) [2023-02-18 04:34:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-02-18 04:34:54,576 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2023-02-18 04:34:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:34:54,577 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-02-18 04:34:54,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-18 04:34:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-02-18 04:34:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 04:34:54,580 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:34:54,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:34:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 04:34:54,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:34:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:34:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1641441273, now seen corresponding path program 1 times [2023-02-18 04:34:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:34:54,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642960975] [2023-02-18 04:34:54,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:34:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:34:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:54,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:34:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:54,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:34:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:34:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:34:54,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642960975] [2023-02-18 04:34:54,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642960975] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:34:54,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:34:54,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 04:34:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301601327] [2023-02-18 04:34:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:34:54,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:34:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:34:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:34:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:34:54,765 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 04:34:54,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:34:54,778 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-02-18 04:34:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:34:54,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-02-18 04:34:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:34:54,779 INFO L225 Difference]: With dead ends: 28 [2023-02-18 04:34:54,779 INFO L226 Difference]: Without dead ends: 20 [2023-02-18 04:34:54,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:34:54,780 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:34:54,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:34:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-18 04:34:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2023-02-18 04:34:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 04:34:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-02-18 04:34:54,785 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 17 [2023-02-18 04:34:54,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:34:54,785 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-02-18 04:34:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 04:34:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-02-18 04:34:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 04:34:54,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:34:54,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:34:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 04:34:54,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:34:54,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:34:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1670070424, now seen corresponding path program 1 times [2023-02-18 04:34:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:34:54,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750613699] [2023-02-18 04:34:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:34:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:34:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:34:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:54,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:34:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:34:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:34:55,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750613699] [2023-02-18 04:34:55,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750613699] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:34:55,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409338212] [2023-02-18 04:34:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:34:55,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:34:55,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:34:55,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:34:55,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 04:34:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:34:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 04:34:55,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:34:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:34:55,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:34:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:34:55,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409338212] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:34:55,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:34:55,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-18 04:34:55,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151237229] [2023-02-18 04:34:55,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:34:55,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 04:34:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:34:55,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 04:34:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-02-18 04:34:55,221 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 04:34:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:34:55,273 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-02-18 04:34:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 04:34:55,274 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 17 [2023-02-18 04:34:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:34:55,274 INFO L225 Difference]: With dead ends: 22 [2023-02-18 04:34:55,275 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 04:34:55,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-18 04:34:55,278 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:34:55,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:34:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 04:34:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 04:34:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:34:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 04:34:55,281 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-02-18 04:34:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:34:55,281 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 04:34:55,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 04:34:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 04:34:55,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 04:34:55,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 04:34:55,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 04:34:55,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:34:55,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 04:34:55,494 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 04:34:55,494 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 04:34:55,494 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L902 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2023-02-18 04:34:55,495 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 11) the Hoare annotation is: true [2023-02-18 04:34:55,495 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-02-18 04:34:55,496 INFO L902 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2023-02-18 04:34:55,496 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-18 04:34:55,496 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2023-02-18 04:34:55,502 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-18 04:34:55,503 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 04:34:55,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:34:55 BoogieIcfgContainer [2023-02-18 04:34:55,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 04:34:55,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 04:34:55,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 04:34:55,507 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 04:34:55,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:34:54" (3/4) ... [2023-02-18 04:34:55,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 04:34:55,514 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2023-02-18 04:34:55,516 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-18 04:34:55,516 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 04:34:55,516 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 04:34:55,521 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 04:34:55,558 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 04:34:55,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 04:34:55,561 INFO L158 Benchmark]: Toolchain (without parser) took 1788.27ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 41.9MB in the end (delta: 15.9MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-02-18 04:34:55,562 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory was 73.3MB in the beginning and 73.2MB in the end (delta: 68.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 04:34:55,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.34ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 48.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 04:34:55,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.79ms. Allocated memory is still 104.9MB. Free memory was 48.0MB in the beginning and 46.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 04:34:55,562 INFO L158 Benchmark]: Boogie Preprocessor took 19.86ms. Allocated memory is still 104.9MB. Free memory was 46.4MB in the beginning and 45.5MB in the end (delta: 968.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 04:34:55,563 INFO L158 Benchmark]: RCFGBuilder took 266.99ms. Allocated memory is still 104.9MB. Free memory was 45.5MB in the beginning and 77.7MB in the end (delta: -32.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-02-18 04:34:55,563 INFO L158 Benchmark]: TraceAbstraction took 1280.50ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 44.0MB in the end (delta: 33.0MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2023-02-18 04:34:55,563 INFO L158 Benchmark]: Witness Printer took 53.45ms. Allocated memory is still 104.9MB. Free memory was 44.0MB in the beginning and 41.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 04:34:55,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory was 73.3MB in the beginning and 73.2MB in the end (delta: 68.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 140.34ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 48.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.79ms. Allocated memory is still 104.9MB. Free memory was 48.0MB in the beginning and 46.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.86ms. Allocated memory is still 104.9MB. Free memory was 46.4MB in the beginning and 45.5MB in the end (delta: 968.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 266.99ms. Allocated memory is still 104.9MB. Free memory was 45.5MB in the beginning and 77.7MB in the end (delta: -32.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1280.50ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 44.0MB in the end (delta: 33.0MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Witness Printer took 53.45ms. Allocated memory is still 104.9MB. Free memory was 44.0MB in the beginning and 41.9MB 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 198 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 153 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 45 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, InterpolantAutomatonStates: 23, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 2 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/16 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-18 04:34:55,585 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 Result: TRUE