./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/ldv-regression/nested_structure_noptr-2.i -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 552504b8dd67a1f0b5535e7605bdb089a6d97e479e395554cfd041029e9dab91 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:27:38,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:27:38,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:27:38,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:27:38,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:27:38,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:27:38,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:27:38,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:27:38,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:27:38,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:27:38,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:27:38,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:27:38,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:27:38,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:27:38,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:27:38,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:27:38,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:27:38,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:27:38,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:27:38,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:27:38,287 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:27:38,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:27:38,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:27:38,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:27:38,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:27:38,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:27:38,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:27:38,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:27:38,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:27:38,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:27:38,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:27:38,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:27:38,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:27:38,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:27:38,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:27:38,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:27:38,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:27:38,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:27:38,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:27:38,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:27:38,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:27:38,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:27:38,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 14:27:38,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:27:38,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:27:38,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:27:38,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:27:38,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:27:38,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:27:38,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:27:38,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:27:38,341 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:27:38,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:27:38,343 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:27:38,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 14:27:38,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:27:38,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:27:38,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:27:38,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:27:38,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:27:38,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:27:38,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:27:38,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:27:38,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:27:38,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:27:38,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:27:38,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:27:38,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:27:38,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:27:38,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:27:38,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:27:38,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 14:27:38,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 14:27:38,347 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:27:38,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:27:38,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:27:38,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 552504b8dd67a1f0b5535e7605bdb089a6d97e479e395554cfd041029e9dab91 [2022-07-19 14:27:38,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:27:38,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:27:38,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:27:38,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:27:38,631 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:27:38,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i [2022-07-19 14:27:38,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db20e43e/7e4723c0eb80447ca1b5261d1d3dabff/FLAGa0228777b [2022-07-19 14:27:39,087 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:27:39,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i [2022-07-19 14:27:39,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db20e43e/7e4723c0eb80447ca1b5261d1d3dabff/FLAGa0228777b [2022-07-19 14:27:39,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db20e43e/7e4723c0eb80447ca1b5261d1d3dabff [2022-07-19 14:27:39,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:27:39,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:27:39,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:27:39,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:27:39,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:27:39,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3722458c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39, skipping insertion in model container [2022-07-19 14:27:39,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:27:39,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:27:39,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i[310,323] [2022-07-19 14:27:39,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:27:39,290 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:27:39,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i[310,323] [2022-07-19 14:27:39,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:27:39,314 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:27:39,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39 WrapperNode [2022-07-19 14:27:39,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:27:39,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:27:39,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:27:39,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:27:39,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,339 INFO L137 Inliner]: procedures = 13, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-07-19 14:27:39,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:27:39,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:27:39,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:27:39,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:27:39,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:27:39,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:27:39,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:27:39,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:27:39,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (1/1) ... [2022-07-19 14:27:39,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:27:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:27:39,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 14:27:39,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 14:27:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:27:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 14:27:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 14:27:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 14:27:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:27:39,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:27:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 14:27:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 14:27:39,463 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:27:39,464 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:27:39,523 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:27:39,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:27:39,527 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 14:27:39,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:27:39 BoogieIcfgContainer [2022-07-19 14:27:39,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:27:39,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:27:39,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:27:39,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:27:39,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:27:39" (1/3) ... [2022-07-19 14:27:39,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8702b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:27:39, skipping insertion in model container [2022-07-19 14:27:39,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:27:39" (2/3) ... [2022-07-19 14:27:39,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8702b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:27:39, skipping insertion in model container [2022-07-19 14:27:39,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:27:39" (3/3) ... [2022-07-19 14:27:39,541 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-2.i [2022-07-19 14:27:39,553 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:27:39,554 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 14:27:39,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:27:39,604 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@383b09c2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@570ed7fd [2022-07-19 14:27:39,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 14:27:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-19 14:27:39,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:27:39,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-19 14:27:39,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:27:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:27:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-07-19 14:27:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:27:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244760006] [2022-07-19 14:27:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:27:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:27:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:27:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:27:39,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:27:39,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244760006] [2022-07-19 14:27:39,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244760006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:27:39,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:27:39,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 14:27:39,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193094629] [2022-07-19 14:27:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:27:39,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 14:27:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:27:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 14:27:39,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:27:39,786 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:27:39,806 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-07-19 14:27:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 14:27:39,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-19 14:27:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:27:39,814 INFO L225 Difference]: With dead ends: 14 [2022-07-19 14:27:39,814 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 14:27:39,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:27:39,820 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:27:39,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:27:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 14:27:39,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 14:27:39,841 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) [2022-07-19 14:27:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 14:27:39,842 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2022-07-19 14:27:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:27:39,843 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 14:27:39,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 14:27:39,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 14:27:39,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 14:27:39,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 14:27:39,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 14:27:39,852 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 14:27:39,853 INFO L902 garLoopResultBuilder]: At program point L32(lines 27 33) the Hoare annotation is: true [2022-07-19 14:27:39,853 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 14:27:39,853 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-07-19 14:27:39,853 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 14:27:39,853 INFO L899 garLoopResultBuilder]: For program point L31-2(line 31) no Hoare annotation was computed. [2022-07-19 14:27:39,854 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 14:27:39,854 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-07-19 14:27:39,861 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-19 14:27:39,861 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-07-19 14:27:39,864 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 14:27:39,871 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 14:27:39,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 02:27:39 BoogieIcfgContainer [2022-07-19 14:27:39,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 14:27:39,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 14:27:39,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 14:27:39,878 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 14:27:39,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:27:39" (3/4) ... [2022-07-19 14:27:39,881 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 14:27:39,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-19 14:27:39,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 14:27:39,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 14:27:39,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 14:27:39,912 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 14:27:39,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 14:27:39,914 INFO L158 Benchmark]: Toolchain (without parser) took 796.36ms. Allocated memory is still 113.2MB. Free memory was 79.0MB in the beginning and 54.4MB in the end (delta: 24.5MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-07-19 14:27:39,917 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:27:39,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.82ms. Allocated memory is still 113.2MB. Free memory was 78.7MB in the beginning and 89.5MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 14:27:39,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.36ms. Allocated memory is still 113.2MB. Free memory was 89.5MB in the beginning and 88.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:27:39,918 INFO L158 Benchmark]: Boogie Preprocessor took 14.46ms. Allocated memory is still 113.2MB. Free memory was 88.0MB in the beginning and 87.1MB in the end (delta: 855.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:27:39,919 INFO L158 Benchmark]: RCFGBuilder took 173.15ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 78.7MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 14:27:39,919 INFO L158 Benchmark]: TraceAbstraction took 347.67ms. Allocated memory is still 113.2MB. Free memory was 78.1MB in the beginning and 57.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-19 14:27:39,927 INFO L158 Benchmark]: Witness Printer took 34.97ms. Allocated memory is still 113.2MB. Free memory was 57.2MB in the beginning and 54.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:27:39,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.82ms. Allocated memory is still 113.2MB. Free memory was 78.7MB in the beginning and 89.5MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.36ms. Allocated memory is still 113.2MB. Free memory was 89.5MB in the beginning and 88.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.46ms. Allocated memory is still 113.2MB. Free memory was 88.0MB in the beginning and 87.1MB in the end (delta: 855.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 173.15ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 78.7MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 347.67ms. Allocated memory is still 113.2MB. Free memory was 78.1MB in the beginning and 57.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 34.97ms. Allocated memory is still 113.2MB. Free memory was 57.2MB in the beginning and 54.4MB in the end (delta: 2.7MB). 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: 12]: 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 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-19 14:27:39,966 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