./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-optional-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/forester-heap/sll-optional-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 88a09c8f9046119952ab983278979c8bac528a0f4e69aababe99c00b4eccdca0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 15:03:55,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 15:03:55,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 15:03:55,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 15:03:55,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 15:03:55,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 15:03:55,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 15:03:55,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 15:03:55,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 15:03:55,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 15:03:55,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 15:03:55,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 15:03:55,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 15:03:55,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 15:03:55,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 15:03:55,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 15:03:55,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 15:03:55,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 15:03:55,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 15:03:55,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 15:03:55,200 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 15:03:55,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 15:03:55,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 15:03:55,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 15:03:55,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 15:03:55,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 15:03:55,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 15:03:55,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 15:03:55,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 15:03:55,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 15:03:55,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 15:03:55,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 15:03:55,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 15:03:55,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 15:03:55,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 15:03:55,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 15:03:55,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 15:03:55,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 15:03:55,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 15:03:55,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 15:03:55,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 15:03:55,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 15:03:55,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 15:03:55,262 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 15:03:55,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 15:03:55,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 15:03:55,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 15:03:55,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 15:03:55,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 15:03:55,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 15:03:55,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 15:03:55,265 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 15:03:55,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 15:03:55,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 15:03:55,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 15:03:55,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 15:03:55,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 15:03:55,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 15:03:55,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 15:03:55,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 15:03:55,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 15:03:55,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 15:03:55,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 15:03:55,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 15:03:55,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 15:03:55,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 15:03:55,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 15:03:55,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:03:55,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 15:03:55,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 15:03:55,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 15:03:55,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 15:03:55,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 15:03:55,270 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 15:03:55,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 15:03:55,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 15:03:55,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88a09c8f9046119952ab983278979c8bac528a0f4e69aababe99c00b4eccdca0 [2022-07-13 15:03:55,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 15:03:55,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 15:03:55,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 15:03:55,519 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 15:03:55,519 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 15:03:55,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-optional-2.i [2022-07-13 15:03:55,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a60493f/b21743869f5b4d97a0febb843f4ef001/FLAG623f5ab19 [2022-07-13 15:03:56,009 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 15:03:56,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-2.i [2022-07-13 15:03:56,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a60493f/b21743869f5b4d97a0febb843f4ef001/FLAG623f5ab19 [2022-07-13 15:03:56,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a60493f/b21743869f5b4d97a0febb843f4ef001 [2022-07-13 15:03:56,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 15:03:56,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 15:03:56,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 15:03:56,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 15:03:56,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 15:03:56,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddc04db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56, skipping insertion in model container [2022-07-13 15:03:56,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 15:03:56,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 15:03:56,309 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/forester-heap/sll-optional-2.i[22641,22654] [2022-07-13 15:03:56,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:03:56,325 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 15:03:56,379 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/forester-heap/sll-optional-2.i[22641,22654] [2022-07-13 15:03:56,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:03:56,409 INFO L208 MainTranslator]: Completed translation [2022-07-13 15:03:56,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56 WrapperNode [2022-07-13 15:03:56,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 15:03:56,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 15:03:56,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 15:03:56,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 15:03:56,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,479 INFO L137 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2022-07-13 15:03:56,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 15:03:56,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 15:03:56,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 15:03:56,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 15:03:56,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 15:03:56,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 15:03:56,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 15:03:56,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 15:03:56,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (1/1) ... [2022-07-13 15:03:56,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:03:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:03:56,569 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) [2022-07-13 15:03:56,582 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 [2022-07-13 15:03:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 15:03:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 15:03:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 15:03:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 15:03:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 15:03:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 15:03:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 15:03:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 15:03:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 15:03:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 15:03:56,700 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 15:03:56,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 15:03:56,940 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 15:03:56,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 15:03:56,945 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 15:03:56,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:03:56 BoogieIcfgContainer [2022-07-13 15:03:56,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 15:03:56,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 15:03:56,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 15:03:56,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 15:03:56,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 03:03:56" (1/3) ... [2022-07-13 15:03:56,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9bf917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:03:56, skipping insertion in model container [2022-07-13 15:03:56,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:03:56" (2/3) ... [2022-07-13 15:03:56,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9bf917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:03:56, skipping insertion in model container [2022-07-13 15:03:56,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:03:56" (3/3) ... [2022-07-13 15:03:56,958 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2022-07-13 15:03:56,980 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 15:03:56,983 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 15:03:57,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 15:03:57,078 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@29367d43, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a442391 [2022-07-13 15:03:57,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 15:03:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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) [2022-07-13 15:03:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 15:03:57,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:03:57,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:03:57,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:03:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:03:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1853593862, now seen corresponding path program 1 times [2022-07-13 15:03:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:03:57,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113809553] [2022-07-13 15:03:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:03:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:03:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:03:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:03:57,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:03:57,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113809553] [2022-07-13 15:03:57,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113809553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:03:57,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:03:57,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 15:03:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352581200] [2022-07-13 15:03:57,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:03:57,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 15:03:57,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:03:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 15:03:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 15:03:57,395 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-07-13 15:03:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:03:57,411 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2022-07-13 15:03:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 15:03:57,414 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-07-13 15:03:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:03:57,421 INFO L225 Difference]: With dead ends: 43 [2022-07-13 15:03:57,421 INFO L226 Difference]: Without dead ends: 18 [2022-07-13 15:03:57,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 15:03:57,428 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:03:57,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:03:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-13 15:03:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-13 15:03:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2022-07-13 15:03:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2022-07-13 15:03:57,457 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2022-07-13 15:03:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:03:57,458 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2022-07-13 15:03:57,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-07-13 15:03:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2022-07-13 15:03:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 15:03:57,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:03:57,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:03:57,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 15:03:57,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:03:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:03:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2143092324, now seen corresponding path program 1 times [2022-07-13 15:03:57,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:03:57,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745143138] [2022-07-13 15:03:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:03:57,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:03:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 15:03:57,520 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 15:03:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 15:03:57,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 15:03:57,588 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 15:03:57,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 15:03:57,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 15:03:57,596 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 15:03:57,600 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 15:03:57,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 03:03:57 BoogieIcfgContainer [2022-07-13 15:03:57,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 15:03:57,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 15:03:57,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 15:03:57,633 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 15:03:57,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:03:56" (3/4) ... [2022-07-13 15:03:57,635 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 15:03:57,679 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 15:03:57,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 15:03:57,681 INFO L158 Benchmark]: Toolchain (without parser) took 1643.07ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 52.2MB in the beginning and 57.0MB in the end (delta: -4.8MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-07-13 15:03:57,682 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 18.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:03:57,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.61ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 52.0MB in the beginning and 79.4MB in the end (delta: -27.5MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-07-13 15:03:57,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.20ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 77.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:03:57,684 INFO L158 Benchmark]: Boogie Preprocessor took 52.13ms. Allocated memory is still 111.1MB. Free memory was 77.4MB in the beginning and 75.6MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 15:03:57,685 INFO L158 Benchmark]: RCFGBuilder took 414.19ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 60.6MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-13 15:03:57,685 INFO L158 Benchmark]: TraceAbstraction took 682.36ms. Allocated memory is still 111.1MB. Free memory was 60.2MB in the beginning and 59.0MB in the end (delta: 1.2MB). Peak memory consumption was 351.7kB. Max. memory is 16.1GB. [2022-07-13 15:03:57,685 INFO L158 Benchmark]: Witness Printer took 46.88ms. Allocated memory is still 111.1MB. Free memory was 59.0MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:03:57,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 18.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 373.61ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 52.0MB in the beginning and 79.4MB in the end (delta: -27.5MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.20ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 77.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.13ms. Allocated memory is still 111.1MB. Free memory was 77.4MB in the beginning and 75.6MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 414.19ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 60.6MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 682.36ms. Allocated memory is still 111.1MB. Free memory was 60.2MB in the beginning and 59.0MB in the end (delta: 1.2MB). Peak memory consumption was 351.7kB. Max. memory is 16.1GB. * Witness Printer took 46.88ms. Allocated memory is still 111.1MB. Free memory was 59.0MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1007]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] COND TRUE __VERIFIER_nondet_int() [L998] head->data = 2 [L998] head->opt = malloc(sizeof(SLL)) [L998] EXPR head->opt [L998] head->opt->next = ((void*)0) [L999] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1004] x = head VAL [head={-1:0}, x={-1:0}] [L1005] COND TRUE x != ((void*)0) VAL [head={-1:0}, x={-1:0}] [L1007] EXPR x->data [L1007] EXPR x->data == 2 && x->opt == x [L1007] EXPR x->opt [L1007] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, x={-1:0}, x->data=2, x->data == 2 && x->opt == x=0, x->opt={-2:0}] [L1007] COND TRUE !(x->data == 2 && x->opt == x) [L1007] reach_error() VAL [head={-1:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 34 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 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 RESULT: Ultimate proved your program to be incorrect! [2022-07-13 15:03:57,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE