./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 01:56:26,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 01:56:26,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 01:56:26,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 01:56:26,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 01:56:26,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 01:56:26,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 01:56:26,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 01:56:26,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 01:56:26,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 01:56:26,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 01:56:26,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 01:56:26,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 01:56:26,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 01:56:26,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 01:56:26,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 01:56:26,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 01:56:26,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 01:56:26,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 01:56:26,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 01:56:26,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 01:56:26,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 01:56:26,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 01:56:26,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 01:56:26,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 01:56:26,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 01:56:26,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 01:56:26,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 01:56:26,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 01:56:26,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 01:56:26,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 01:56:26,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 01:56:26,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 01:56:26,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 01:56:26,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 01:56:26,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 01:56:26,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 01:56:26,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 01:56:26,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 01:56:26,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 01:56:26,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 01:56:26,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 01:56:26,631 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 01:56:26,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 01:56:26,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 01:56:26,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 01:56:26,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 01:56:26,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 01:56:26,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 01:56:26,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 01:56:26,635 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 01:56:26,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 01:56:26,636 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 01:56:26,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 01:56:26,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 01:56:26,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 01:56:26,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 01:56:26,637 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 01:56:26,637 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 01:56:26,637 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 01:56:26,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 01:56:26,638 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 01:56:26,638 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 01:56:26,638 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 01:56:26,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 01:56:26,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 01:56:26,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 01:56:26,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 01:56:26,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 01:56:26,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 01:56:26,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 01:56:26,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 01:56:26,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 01:56:26,640 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 01:56:26,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 01:56:26,641 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 01:56:26,641 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b [2023-02-14 01:56:26,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 01:56:26,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 01:56:26,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 01:56:26,926 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 01:56:26,926 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 01:56:26,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2023-02-14 01:56:28,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 01:56:28,240 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 01:56:28,240 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2023-02-14 01:56:28,245 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bd866e7/6dd6cd52f7534718bbab00d31151aa9e/FLAG8fbdd7fd2 [2023-02-14 01:56:28,261 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bd866e7/6dd6cd52f7534718bbab00d31151aa9e [2023-02-14 01:56:28,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 01:56:28,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 01:56:28,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 01:56:28,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 01:56:28,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 01:56:28,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adbfa03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28, skipping insertion in model container [2023-02-14 01:56:28,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 01:56:28,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 01:56:28,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 01:56:28,408 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 01:56:28,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 01:56:28,449 INFO L208 MainTranslator]: Completed translation [2023-02-14 01:56:28,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28 WrapperNode [2023-02-14 01:56:28,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 01:56:28,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 01:56:28,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 01:56:28,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 01:56:28,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,488 INFO L138 Inliner]: procedures = 9, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2023-02-14 01:56:28,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 01:56:28,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 01:56:28,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 01:56:28,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 01:56:28,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,537 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 01:56:28,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 01:56:28,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 01:56:28,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 01:56:28,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (1/1) ... [2023-02-14 01:56:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 01:56:28,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:56:28,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 01:56:28,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 01:56:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 01:56:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 01:56:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 01:56:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 01:56:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 01:56:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 01:56:28,675 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 01:56:28,679 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 01:56:28,945 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 01:56:28,951 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 01:56:28,951 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 01:56:28,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:56:28 BoogieIcfgContainer [2023-02-14 01:56:28,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 01:56:28,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 01:56:28,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 01:56:28,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 01:56:28,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 01:56:28" (1/3) ... [2023-02-14 01:56:28,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c0f1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:56:28, skipping insertion in model container [2023-02-14 01:56:28,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:56:28" (2/3) ... [2023-02-14 01:56:28,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c0f1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:56:28, skipping insertion in model container [2023-02-14 01:56:28,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:56:28" (3/3) ... [2023-02-14 01:56:28,961 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2023-02-14 01:56:28,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 01:56:28,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-02-14 01:56:29,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 01:56:29,017 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3530abfa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 01:56:29,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-02-14 01:56:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 28 states have (on average 1.75) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 01:56:29,029 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:56:29,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 01:56:29,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-02-14 01:56:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:56:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash 28698921, now seen corresponding path program 1 times [2023-02-14 01:56:29,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:56:29,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992306159] [2023-02-14 01:56:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:56:29,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:56:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:56:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:56:29,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:56:29,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992306159] [2023-02-14 01:56:29,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992306159] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:56:29,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:56:29,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 01:56:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291708064] [2023-02-14 01:56:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:56:29,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 01:56:29,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:56:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 01:56:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 01:56:29,481 INFO L87 Difference]: Start difference. First operand has 40 states, 28 states have (on average 1.75) internal successors, (49), 39 states have internal predecessors, (49), 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, 3 states have (on average 1.6666666666666667) 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) [2023-02-14 01:56:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:56:29,571 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-14 01:56:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 01:56:29,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2023-02-14 01:56:29,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:56:29,583 INFO L225 Difference]: With dead ends: 38 [2023-02-14 01:56:29,583 INFO L226 Difference]: Without dead ends: 36 [2023-02-14 01:56:29,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 01:56:29,591 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 47 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 01:56:29,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 43 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 01:56:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-14 01:56:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-14 01:56:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-02-14 01:56:29,626 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 5 [2023-02-14 01:56:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:56:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-02-14 01:56:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-02-14 01:56:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-02-14 01:56:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 01:56:29,628 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:56:29,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 01:56:29,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 01:56:29,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-02-14 01:56:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:56:29,631 INFO L85 PathProgramCache]: Analyzing trace with hash 28698922, now seen corresponding path program 1 times [2023-02-14 01:56:29,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:56:29,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544036614] [2023-02-14 01:56:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:56:29,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:56:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:56:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:56:29,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:56:29,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544036614] [2023-02-14 01:56:29,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544036614] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:56:29,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:56:29,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 01:56:29,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706535627] [2023-02-14 01:56:29,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:56:29,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 01:56:29,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:56:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 01:56:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 01:56:29,876 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-02-14 01:56:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:56:29,967 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2023-02-14 01:56:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 01:56:29,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2023-02-14 01:56:29,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:56:29,970 INFO L225 Difference]: With dead ends: 95 [2023-02-14 01:56:29,970 INFO L226 Difference]: Without dead ends: 95 [2023-02-14 01:56:29,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 01:56:29,972 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 01:56:29,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 70 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 01:56:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-14 01:56:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 39. [2023-02-14 01:56:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-02-14 01:56:29,979 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 5 [2023-02-14 01:56:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:56:29,979 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-02-14 01:56:29,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-02-14 01:56:29,979 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-02-14 01:56:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 01:56:29,980 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:56:29,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 01:56:29,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 01:56:29,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-02-14 01:56:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:56:29,981 INFO L85 PathProgramCache]: Analyzing trace with hash 889656834, now seen corresponding path program 1 times [2023-02-14 01:56:29,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:56:29,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524869999] [2023-02-14 01:56:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:56:29,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:56:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:56:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:56:29,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:56:30,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524869999] [2023-02-14 01:56:30,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524869999] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:56:30,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:56:30,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 01:56:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315692167] [2023-02-14 01:56:30,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:56:30,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 01:56:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:56:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 01:56:30,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 01:56:30,002 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:56:30,023 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2023-02-14 01:56:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 01:56:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-14 01:56:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:56:30,024 INFO L225 Difference]: With dead ends: 62 [2023-02-14 01:56:30,024 INFO L226 Difference]: Without dead ends: 62 [2023-02-14 01:56:30,025 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 [2023-02-14 01:56:30,026 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:56:30,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 55 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:56:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-14 01:56:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 38. [2023-02-14 01:56:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-02-14 01:56:30,030 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2023-02-14 01:56:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:56:30,031 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-02-14 01:56:30,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-02-14 01:56:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 01:56:30,032 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:56:30,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 01:56:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 01:56:30,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-02-14 01:56:30,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:56:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash 889666543, now seen corresponding path program 1 times [2023-02-14 01:56:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:56:30,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257493586] [2023-02-14 01:56:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:56:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:56:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:56:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 01:56:30,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:56:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257493586] [2023-02-14 01:56:30,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257493586] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:56:30,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:56:30,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 01:56:30,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174653084] [2023-02-14 01:56:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:56:30,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 01:56:30,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:56:30,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 01:56:30,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 01:56:30,109 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:56:30,137 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-02-14 01:56:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 01:56:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-02-14 01:56:30,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:56:30,140 INFO L225 Difference]: With dead ends: 37 [2023-02-14 01:56:30,140 INFO L226 Difference]: Without dead ends: 37 [2023-02-14 01:56:30,140 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 [2023-02-14 01:56:30,147 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 01:56:30,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 40 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 01:56:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-14 01:56:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-14 01:56:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-14 01:56:30,153 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 6 [2023-02-14 01:56:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:56:30,154 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-14 01:56:30,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 01:56:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-14 01:56:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 01:56:30,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:56:30,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 01:56:30,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 01:56:30,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-02-14 01:56:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:56:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash 889666544, now seen corresponding path program 1 times [2023-02-14 01:56:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:56:30,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318150484] [2023-02-14 01:56:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:56:30,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:56:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 01:56:30,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 01:56:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 01:56:30,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 01:56:30,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-14 01:56:30,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-02-14 01:56:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-02-14 01:56:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-02-14 01:56:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-02-14 01:56:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-02-14 01:56:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-02-14 01:56:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2023-02-14 01:56:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2023-02-14 01:56:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2023-02-14 01:56:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2023-02-14 01:56:30,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2023-02-14 01:56:30,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 01:56:30,219 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-02-14 01:56:30,223 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 01:56:30,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 01:56:30 BoogieIcfgContainer [2023-02-14 01:56:30,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 01:56:30,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 01:56:30,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 01:56:30,241 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 01:56:30,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:56:28" (3/4) ... [2023-02-14 01:56:30,245 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-14 01:56:30,282 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 01:56:30,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 01:56:30,283 INFO L158 Benchmark]: Toolchain (without parser) took 2018.30ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 80.3MB in the beginning and 112.2MB in the end (delta: -31.9MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2023-02-14 01:56:30,284 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 90.7MB in the beginning and 90.6MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 01:56:30,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.41ms. Allocated memory is still 121.6MB. Free memory was 79.9MB in the beginning and 69.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 01:56:30,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 121.6MB. Free memory was 69.9MB in the beginning and 68.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 01:56:30,289 INFO L158 Benchmark]: Boogie Preprocessor took 53.80ms. Allocated memory is still 121.6MB. Free memory was 68.2MB in the beginning and 66.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 01:56:30,289 INFO L158 Benchmark]: RCFGBuilder took 409.33ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 53.9MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-14 01:56:30,289 INFO L158 Benchmark]: TraceAbstraction took 1284.11ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 53.5MB in the beginning and 113.3MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 01:56:30,290 INFO L158 Benchmark]: Witness Printer took 42.10ms. Allocated memory is still 153.1MB. Free memory was 113.3MB in the beginning and 112.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 01:56:30,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 90.7MB in the beginning and 90.6MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.41ms. Allocated memory is still 121.6MB. Free memory was 79.9MB in the beginning and 69.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 121.6MB. Free memory was 69.9MB in the beginning and 68.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.80ms. Allocated memory is still 121.6MB. Free memory was 68.2MB in the beginning and 66.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 409.33ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 53.9MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1284.11ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 53.5MB in the beginning and 113.3MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.10ms. Allocated memory is still 153.1MB. Free memory was 113.3MB in the beginning and 112.2MB in the end (delta: 1.1MB). 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 [L34] CALL foo(i, b, i + 1) [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, b[i]=401, i=0, n=0, size=1] [L23] a[i] = b[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 120 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 4 MinimizatonAttempts, 80 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-14 01:56:30,321 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(valid-deref)