./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:56,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:56,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:56,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:56,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:56,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:56,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:56,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:56,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:56,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:56,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:56,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:56,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:56,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:56,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:56,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:56,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:56,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:56,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:56,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:56,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:56,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:56,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:56,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:56,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:56,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:56,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:56,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:56,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:56,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:56,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:56,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:56,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:56,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:56,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:56,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:56,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:56,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:56,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:56,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:56,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:56,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:00:56,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:56,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:56,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:56,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:56,613 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:56,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:56,620 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:56,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:00:56,620 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:56,620 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:56,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:00:56,622 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:00:56,622 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:56,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:00:56,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:00:56,623 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:00:56,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:00:56,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:00:56,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:56,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:00:56,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:00:56,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:00:56,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:00:56,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:56,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:00:56,626 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:00:56,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:00:56,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:56,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:00:56,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:00:56,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:56,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:56,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:56,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:56,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:56,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:56,631 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:00:56,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:00:56,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:56,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:56,631 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 [2021-11-19 14:00:56,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:57,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:57,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:57,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:57,009 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:57,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2021-11-19 14:00:57,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/data/b290364a2/b25574958c3e4570a239314f695ab73c/FLAG007d7c2a9 [2021-11-19 14:00:57,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:57,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2021-11-19 14:00:57,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/data/b290364a2/b25574958c3e4570a239314f695ab73c/FLAG007d7c2a9 [2021-11-19 14:00:57,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/data/b290364a2/b25574958c3e4570a239314f695ab73c [2021-11-19 14:00:57,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:57,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:57,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:57,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:57,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:57,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:57" (1/1) ... [2021-11-19 14:00:57,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@813865b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:57, skipping insertion in model container [2021-11-19 14:00:57,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:57" (1/1) ... [2021-11-19 14:00:58,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:58,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:58,220 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:58,228 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:00:58,244 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:58,256 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:00:58,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58 WrapperNode [2021-11-19 14:00:58,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:58,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:58,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:00:58,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:00:58,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,293 INFO L137 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2021-11-19 14:00:58,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:58,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:00:58,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:00:58,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:00:58,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:00:58,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:00:58,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:00:58,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:00:58,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (1/1) ... [2021-11-19 14:00:58,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:00:58,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:00:58,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:00:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 14:00:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:00:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:00:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 14:00:58,501 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:00:58,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:00:58,690 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:00:58,767 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:00:58,781 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 14:00:58,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:58 BoogieIcfgContainer [2021-11-19 14:00:58,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:00:58,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:00:58,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:00:58,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:00:58,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:00:57" (1/3) ... [2021-11-19 14:00:58,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da483b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:58, skipping insertion in model container [2021-11-19 14:00:58,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:58" (2/3) ... [2021-11-19 14:00:58,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da483b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:58, skipping insertion in model container [2021-11-19 14:00:58,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:58" (3/3) ... [2021-11-19 14:00:58,808 INFO L111 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2021-11-19 14:00:58,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:00:58,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-19 14:00:58,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:00:58,878 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 [2021-11-19 14:00:58,889 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-19 14:00:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 10 states have (on average 2.5) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-11-19 14:00:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:00:58,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:58,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:00:58,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 9 more)] === [2021-11-19 14:00:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 91537, now seen corresponding path program 1 times [2021-11-19 14:00:58,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:00:58,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000841644] [2021-11-19 14:00:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:58,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:00:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:59,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:00:59,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000841644] [2021-11-19 14:00:59,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000841644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:59,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:59,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 14:00:59,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509767932] [2021-11-19 14:00:59,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:59,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:59,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:00:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:59,144 INFO L87 Difference]: Start difference. First operand has 24 states, 10 states have (on average 2.5) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-19 14:00:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:59,189 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-19 14:00:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:59,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-19 14:00:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:59,208 INFO L225 Difference]: With dead ends: 23 [2021-11-19 14:00:59,209 INFO L226 Difference]: Without dead ends: 21 [2021-11-19 14:00:59,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:59,223 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:59,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:00:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-19 14:00:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-19 14:00:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-11-19 14:00:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-19 14:00:59,263 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 3 [2021-11-19 14:00:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:59,263 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-19 14:00:59,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-19 14:00:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-19 14:00:59,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:00:59,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:59,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:00:59,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:00:59,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 9 more)] === [2021-11-19 14:00:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2780751, now seen corresponding path program 1 times [2021-11-19 14:00:59,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:00:59,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104150534] [2021-11-19 14:00:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:59,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:00:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:00:59,281 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:00:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:00:59,321 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:00:59,322 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:00:59,324 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (12 of 13 remaining) [2021-11-19 14:00:59,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (11 of 13 remaining) [2021-11-19 14:00:59,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (10 of 13 remaining) [2021-11-19 14:00:59,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (9 of 13 remaining) [2021-11-19 14:00:59,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (8 of 13 remaining) [2021-11-19 14:00:59,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (7 of 13 remaining) [2021-11-19 14:00:59,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (6 of 13 remaining) [2021-11-19 14:00:59,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (5 of 13 remaining) [2021-11-19 14:00:59,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (4 of 13 remaining) [2021-11-19 14:00:59,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (3 of 13 remaining) [2021-11-19 14:00:59,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (2 of 13 remaining) [2021-11-19 14:00:59,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (1 of 13 remaining) [2021-11-19 14:00:59,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2021-11-19 14:00:59,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:00:59,333 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 14:00:59,337 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:00:59,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:00:59 BoogieIcfgContainer [2021-11-19 14:00:59,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:00:59,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:00:59,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:00:59,358 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:00:59,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:58" (3/4) ... [2021-11-19 14:00:59,360 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:00:59,395 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:00:59,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:00:59,396 INFO L158 Benchmark]: Toolchain (without parser) took 1410.25ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 66.8MB in the beginning and 107.5MB in the end (delta: -40.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:59,397 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:59,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.77ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 66.5MB in the beginning and 111.4MB in the end (delta: -44.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:00:59,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.64ms. Allocated memory is still 136.3MB. Free memory was 111.4MB in the beginning and 110.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:00:59,398 INFO L158 Benchmark]: Boogie Preprocessor took 25.86ms. Allocated memory is still 136.3MB. Free memory was 110.2MB in the beginning and 108.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:59,399 INFO L158 Benchmark]: RCFGBuilder took 463.36ms. Allocated memory is still 136.3MB. Free memory was 108.8MB in the beginning and 96.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:00:59,399 INFO L158 Benchmark]: TraceAbstraction took 570.82ms. Allocated memory is still 136.3MB. Free memory was 96.3MB in the beginning and 108.9MB in the end (delta: -12.6MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2021-11-19 14:00:59,400 INFO L158 Benchmark]: Witness Printer took 37.55ms. Allocated memory is still 136.3MB. Free memory was 108.9MB in the beginning and 107.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:00:59,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.77ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 66.5MB in the beginning and 111.4MB in the end (delta: -44.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.64ms. Allocated memory is still 136.3MB. Free memory was 111.4MB in the beginning and 110.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.86ms. Allocated memory is still 136.3MB. Free memory was 110.2MB in the beginning and 108.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 463.36ms. Allocated memory is still 136.3MB. Free memory was 108.8MB in the beginning and 96.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 570.82ms. Allocated memory is still 136.3MB. Free memory was 96.3MB in the beginning and 108.9MB in the end (delta: -12.6MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 37.55ms. Allocated memory is still 136.3MB. Free memory was 108.9MB in the beginning and 107.5MB in the end (delta: 1.4MB). 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: 12]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L23] int *a; [L24] int array_size = __VERIFIER_nondet_int(); [L25] CALL SelectionSort(a, array_size) [L5] int i; [L6] i = 0 VAL [\old(array_size)=2, a={5:3}, a={5:3}, array_size=2, i=0] [L6] COND TRUE i < array_size - 1 [L8] int j, min, temp; [L9] min = i [L10] j = i+1 VAL [\old(array_size)=2, a={5:3}, a={5:3}, array_size=2, i=0, j=1, min=0] [L10] COND TRUE j < array_size VAL [\old(array_size)=2, a={5:3}, a={5:3}, array_size=2, i=0, j=1, min=0] [L12] a[j] - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: 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, 24 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 14:00:59,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c086890c-bb22-424e-8d05-7017c6d2a71c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)