./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_malloc-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/test_malloc-1.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 14d9bdceb12d4ac816bce93d05714f00f1eaadd0420cdf9ca673b95dab112da3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:19:51,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:19:51,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:19:51,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:19:51,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:19:51,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:19:51,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:19:51,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:19:51,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:19:51,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:19:51,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:19:51,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:19:51,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:19:51,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:19:51,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:19:51,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:19:51,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:19:51,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:19:51,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:19:51,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:19:51,450 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:19:51,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:19:51,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:19:51,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:19:51,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:19:51,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:19:51,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:19:51,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:19:51,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:19:51,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:19:51,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:19:51,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:19:51,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:19:51,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:19:51,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:19:51,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:19:51,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:19:51,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:19:51,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:19:51,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:19:51,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:19:51,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:19:51,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:19:51,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:19:51,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:19:51,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:19:51,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:19:51,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:19:51,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:19:51,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:19:51,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:19:51,512 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:19:51,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:19:51,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:19:51,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:19:51,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:19:51,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:19:51,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:19:51,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:19:51,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:19:51,515 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:19:51,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:19:51,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:19:51,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:19:51,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:19:51,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:19:51,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:19:51,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:19:51,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:19:51,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:19:51,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:19:51,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:19:51,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:19:51,517 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:19:51,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:19:51,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:19:51,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14d9bdceb12d4ac816bce93d05714f00f1eaadd0420cdf9ca673b95dab112da3 [2022-07-12 03:19:51,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:19:51,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:19:51,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:19:51,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:19:51,817 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:19:51,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_malloc-1.i [2022-07-12 03:19:51,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b47510a/3bc4df1a438047df8040537e5ec325dd/FLAG10f9dd572 [2022-07-12 03:19:52,354 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:19:52,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_malloc-1.i [2022-07-12 03:19:52,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b47510a/3bc4df1a438047df8040537e5ec325dd/FLAG10f9dd572 [2022-07-12 03:19:52,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b47510a/3bc4df1a438047df8040537e5ec325dd [2022-07-12 03:19:52,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:19:52,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:19:52,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:19:52,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:19:52,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:19:52,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:19:52" (1/1) ... [2022-07-12 03:19:52,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5111ed7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:52, skipping insertion in model container [2022-07-12 03:19:52,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:19:52" (1/1) ... [2022-07-12 03:19:52,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:19:52,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:19:52,953 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/test_malloc-1.i[813,826] [2022-07-12 03:19:53,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:19:53,101 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:19:53,120 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/test_malloc-1.i[813,826] [2022-07-12 03:19:53,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:19:53,185 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:19:53,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53 WrapperNode [2022-07-12 03:19:53,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:19:53,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:19:53,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:19:53,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:19:53,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,232 INFO L137 Inliner]: procedures = 131, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-07-12 03:19:53,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:19:53,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:19:53,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:19:53,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:19:53,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:19:53,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:19:53,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:19:53,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:19:53,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (1/1) ... [2022-07-12 03:19:53,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:19:53,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:19:53,284 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) [2022-07-12 03:19:53,286 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 [2022-07-12 03:19:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:19:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:19:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:19:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:19:53,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:19:53,410 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:19:53,411 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:19:53,545 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:19:53,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:19:53,551 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 03:19:53,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:53 BoogieIcfgContainer [2022-07-12 03:19:53,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:19:53,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:19:53,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:19:53,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:19:53,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:19:52" (1/3) ... [2022-07-12 03:19:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf9e590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:53, skipping insertion in model container [2022-07-12 03:19:53,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:53" (2/3) ... [2022-07-12 03:19:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf9e590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:53, skipping insertion in model container [2022-07-12 03:19:53,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:53" (3/3) ... [2022-07-12 03:19:53,560 INFO L111 eAbstractionObserver]: Analyzing ICFG test_malloc-1.i [2022-07-12 03:19:53,576 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:19:53,576 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:19:53,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:19:53,648 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@2d2c5a71, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72754228 [2022-07-12 03:19:53,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:19:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-07-12 03:19:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-12 03:19:53,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:19:53,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-12 03:19:53,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:19:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:19:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2022-07-12 03:19:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:19:53,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952904] [2022-07-12 03:19:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:19:53,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:19:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:19:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:19:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:19:53,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952904] [2022-07-12 03:19:53,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:19:53,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:19:53,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:19:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768305676] [2022-07-12 03:19:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:19:53,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:19:53,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:19:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:19:53,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:19:53,995 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-12 03:19:54,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:19:54,043 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2022-07-12 03:19:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:19:54,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-07-12 03:19:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:19:54,052 INFO L225 Difference]: With dead ends: 20 [2022-07-12 03:19:54,053 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 03:19:54,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:19:54,063 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:19:54,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:19:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 03:19:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 03:19:54,085 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) [2022-07-12 03:19:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 03:19:54,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2022-07-12 03:19:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:19:54,087 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 03:19:54,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-12 03:19:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 03:19:54,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 03:19:54,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:19:54,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:19:54,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 03:19:54,123 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 387) no Hoare annotation was computed. [2022-07-12 03:19:54,123 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 03:19:54,124 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 03:19:54,124 INFO L899 garLoopResultBuilder]: For program point L385-2(lines 385 387) no Hoare annotation was computed. [2022-07-12 03:19:54,124 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 03:19:54,125 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 03:19:54,125 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-07-12 03:19:54,125 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-07-12 03:19:54,125 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2022-07-12 03:19:54,126 INFO L895 garLoopResultBuilder]: At program point L14-2(lines 13 18) the Hoare annotation is: (and (not (= |ULTIMATE.start_main_~p2~0#1.base| |ULTIMATE.start_main_~p1~0#1.base|)) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) [2022-07-12 03:19:54,126 INFO L895 garLoopResultBuilder]: At program point L388(lines 382 389) the Hoare annotation is: (not (= |ULTIMATE.start_main_~p2~0#1.base| |ULTIMATE.start_main_~p1~0#1.base|)) [2022-07-12 03:19:54,130 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 03:19:54,133 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:19:54,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:19:54 BoogieIcfgContainer [2022-07-12 03:19:54,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:19:54,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:19:54,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:19:54,170 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:19:54,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:53" (3/4) ... [2022-07-12 03:19:54,176 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 03:19:54,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-12 03:19:54,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 03:19:54,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 03:19:54,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 03:19:54,224 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 03:19:54,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:19:54,227 INFO L158 Benchmark]: Toolchain (without parser) took 1497.77ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 60.5MB in the beginning and 109.6MB in the end (delta: -49.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:54,228 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 78.4MB in the beginning and 78.3MB in the end (delta: 46.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:54,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.46ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 69.0MB in the end (delta: -8.7MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-07-12 03:19:54,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.58ms. Allocated memory is still 100.7MB. Free memory was 69.0MB in the beginning and 67.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:19:54,229 INFO L158 Benchmark]: Boogie Preprocessor took 18.60ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 66.2MB in the end (delta: 915.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:54,229 INFO L158 Benchmark]: RCFGBuilder took 300.28ms. Allocated memory is still 100.7MB. Free memory was 66.2MB in the beginning and 56.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 03:19:54,230 INFO L158 Benchmark]: TraceAbstraction took 614.64ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 56.1MB in the beginning and 111.6MB in the end (delta: -55.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:54,230 INFO L158 Benchmark]: Witness Printer took 54.93ms. Allocated memory is still 136.3MB. Free memory was 111.6MB in the beginning and 109.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:19:54,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 78.4MB in the beginning and 78.3MB in the end (delta: 46.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.46ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 69.0MB in the end (delta: -8.7MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.58ms. Allocated memory is still 100.7MB. Free memory was 69.0MB in the beginning and 67.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.60ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 66.2MB in the end (delta: 915.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 300.28ms. Allocated memory is still 100.7MB. Free memory was 66.2MB in the beginning and 56.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 614.64ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 56.1MB in the beginning and 111.6MB in the end (delta: -55.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.93ms. Allocated memory is still 136.3MB. Free memory was 111.6MB in the beginning and 109.6MB in the end (delta: 2.0MB). 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: 15]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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: 382]: Loop Invariant Derived loop invariant: !(p2 == p1) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !(p2 == p1) && !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-07-12 03:19:54,291 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