./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/stroeder1_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ae007674 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/array-memsafety/stroeder1_unsafe.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 c2abc4818f3da11ae6301593bd436ebe629d07f999067705d8f0ca0fc41bf695 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:46:22,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:46:22,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:46:22,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:46:22,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:46:22,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:46:22,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:46:22,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:46:22,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:46:22,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:46:22,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:46:22,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:46:22,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:46:22,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:46:22,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:46:22,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:46:22,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:46:22,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:46:22,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:46:22,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:46:22,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:46:22,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:46:22,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:46:22,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:46:22,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:46:22,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:46:22,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:46:22,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:46:22,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:46:22,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:46:22,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:46:22,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:46:22,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:46:22,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:46:22,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:46:22,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:46:22,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:46:22,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:46:22,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:46:22,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:46:22,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:46:22,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-28 05:46:22,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:46:22,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:46:22,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:46:22,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:46:22,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:46:22,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:46:22,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:46:22,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:46:22,497 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:46:22,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:46:22,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:46:22,498 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 05:46:22,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:46:22,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:46:22,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:46:22,498 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 05:46:22,498 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 05:46:22,498 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 05:46:22,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:46:22,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 05:46:22,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:46:22,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:46:22,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:46:22,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:46:22,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:46:22,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:46:22,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:46:22,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:46:22,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 05:46:22,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 05:46:22,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2abc4818f3da11ae6301593bd436ebe629d07f999067705d8f0ca0fc41bf695 [2021-12-28 05:46:22,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:46:22,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:46:22,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:46:22,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:46:22,751 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:46:22,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/stroeder1_unsafe.c [2021-12-28 05:46:22,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba989fd0/fc06fd2571b04eb6895bcac714c3e31c/FLAGc1be620ca [2021-12-28 05:46:23,157 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:46:23,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/stroeder1_unsafe.c [2021-12-28 05:46:23,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba989fd0/fc06fd2571b04eb6895bcac714c3e31c/FLAGc1be620ca [2021-12-28 05:46:23,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba989fd0/fc06fd2571b04eb6895bcac714c3e31c [2021-12-28 05:46:23,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:46:23,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:46:23,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:46:23,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:46:23,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:46:23,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5735ff3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23, skipping insertion in model container [2021-12-28 05:46:23,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:46:23,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:46:23,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:46:23,310 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:46:23,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:46:23,360 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:46:23,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23 WrapperNode [2021-12-28 05:46:23,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:46:23,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:46:23,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:46:23,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:46:23,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,388 INFO L137 Inliner]: procedures = 8, calls = 4, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-12-28 05:46:23,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:46:23,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:46:23,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:46:23,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:46:23,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:46:23,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:46:23,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:46:23,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:46:23,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (1/1) ... [2021-12-28 05:46:23,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:46:23,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:46:23,438 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) [2021-12-28 05:46:23,460 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 [2021-12-28 05:46:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:46:23,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:46:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 05:46:23,519 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:46:23,520 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:46:23,595 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:46:23,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:46:23,599 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 05:46:23,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:46:23 BoogieIcfgContainer [2021-12-28 05:46:23,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:46:23,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:46:23,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:46:23,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:46:23,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:46:23" (1/3) ... [2021-12-28 05:46:23,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6031df20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:46:23, skipping insertion in model container [2021-12-28 05:46:23,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:23" (2/3) ... [2021-12-28 05:46:23,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6031df20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:46:23, skipping insertion in model container [2021-12-28 05:46:23,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:46:23" (3/3) ... [2021-12-28 05:46:23,612 INFO L111 eAbstractionObserver]: Analyzing ICFG stroeder1_unsafe.c [2021-12-28 05:46:23,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:46:23,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-28 05:46:23,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:46:23,665 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 05:46:23,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-28 05:46:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-12-28 05:46:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-28 05:46:23,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:46:23,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-28 05:46:23,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-28 05:46:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:46:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-12-28 05:46:23,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:46:23,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14056271] [2021-12-28 05:46:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:46:23,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:46:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 05:46:23,791 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 05:46:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 05:46:23,834 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 05:46:23,836 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 05:46:23,837 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (2 of 3 remaining) [2021-12-28 05:46:23,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (1 of 3 remaining) [2021-12-28 05:46:23,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-12-28 05:46:23,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 05:46:23,844 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-28 05:46:23,847 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 05:46:23,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 05:46:23 BoogieIcfgContainer [2021-12-28 05:46:23,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 05:46:23,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 05:46:23,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 05:46:23,866 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 05:46:23,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:46:23" (3/4) ... [2021-12-28 05:46:23,868 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-28 05:46:23,899 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 05:46:23,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 05:46:23,900 INFO L158 Benchmark]: Toolchain (without parser) took 719.62ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 30.2MB in the beginning and 43.7MB in the end (delta: -13.5MB). Peak memory consumption was 486.3kB. Max. memory is 16.1GB. [2021-12-28 05:46:23,900 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:46:23,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.74ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 30.0MB in the beginning and 51.1MB in the end (delta: -21.1MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-12-28 05:46:23,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.53ms. Allocated memory is still 67.1MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:46:23,902 INFO L158 Benchmark]: Boogie Preprocessor took 24.29ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 48.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:46:23,902 INFO L158 Benchmark]: RCFGBuilder took 185.74ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 39.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-28 05:46:23,902 INFO L158 Benchmark]: TraceAbstraction took 261.72ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 45.4MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:46:23,903 INFO L158 Benchmark]: Witness Printer took 33.31ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 43.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 05:46:23,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.74ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 30.0MB in the beginning and 51.1MB in the end (delta: -21.1MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.53ms. Allocated memory is still 67.1MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.29ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 48.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 185.74ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 39.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 261.72ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 45.4MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.31ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 43.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L17] int* numbers; [L18] int array_size = __VERIFIER_nondet_int(); [L19] CALL sumOfThirdBytes(numbers, array_size) [L5] int i, sum; [L6] char* p; [L7] sum = 0 [L8] i = 0 VAL [\old(array_size)=2, array_size=2, i=0, numbers={3:-2}, numbers={3:-2}, sum=0] [L8] COND TRUE i < array_size [L9] p = &(numbers[i]) [L10] p = p + 2 VAL [\old(array_size)=2, array_size=2, i=0, numbers={3:-2}, numbers={3:-2}, p={3:0}, sum=0] [L11] \read(*p) - UnprovableResult [Line: 11]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: 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, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-12-28 05:46:23,936 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)