./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer --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 74d770113cb1f1dff37024c2e31ce0944e8f2983 ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:17:41,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:17:41,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:17:41,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:17:41,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:17:41,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:17:41,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:17:41,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:17:41,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:17:41,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:17:41,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:17:41,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:17:41,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:17:41,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:17:41,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:17:41,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:17:41,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:17:41,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:17:41,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:17:41,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:17:41,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:17:41,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:17:41,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:17:41,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:17:41,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:17:41,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:17:41,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:17:41,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:17:41,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:17:41,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:17:41,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:17:41,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:17:41,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:17:41,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:17:41,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:17:41,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:17:41,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:17:41,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:17:41,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:17:41,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:17:41,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:17:41,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 15:17:41,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:17:41,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:17:41,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:17:41,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:17:41,558 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:17:41,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:17:41,558 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:17:41,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:17:41,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:17:41,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:17:41,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:17:41,559 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 15:17:41,559 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 15:17:41,559 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 15:17:41,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:17:41,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:17:41,560 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:17:41,560 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:17:41,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:17:41,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:17:41,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:17:41,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:17:41,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:17:41,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:17:41,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:17:41,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:17:41,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:17:41,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:17:41,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer 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 -> 74d770113cb1f1dff37024c2e31ce0944e8f2983 [2019-12-07 15:17:41,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:17:41,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:17:41,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:17:41,675 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:17:41,675 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:17:41,676 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2019-12-07 15:17:41,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/data/05d788150/ad51e7f580bc438dbaa34d1989a4f283/FLAGc2df78f34 [2019-12-07 15:17:42,119 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:17:42,119 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2019-12-07 15:17:42,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/data/05d788150/ad51e7f580bc438dbaa34d1989a4f283/FLAGc2df78f34 [2019-12-07 15:17:42,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/data/05d788150/ad51e7f580bc438dbaa34d1989a4f283 [2019-12-07 15:17:42,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:17:42,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 15:17:42,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:17:42,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:17:42,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:17:42,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27140d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42, skipping insertion in model container [2019-12-07 15:17:42,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:17:42,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:17:42,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:17:42,294 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:17:42,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:17:42,320 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:17:42,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42 WrapperNode [2019-12-07 15:17:42,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:17:42,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:17:42,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:17:42,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:17:42,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... [2019-12-07 15:17:42,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:17:42,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:17:42,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:17:42,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:17:42,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:17:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 15:17:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:17:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2019-12-07 15:17:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 15:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 15:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2019-12-07 15:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 15:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 15:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:17:42,541 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:17:42,541 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 15:17:42,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:17:42 BoogieIcfgContainer [2019-12-07 15:17:42,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:17:42,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:17:42,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:17:42,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:17:42,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:17:42" (1/3) ... [2019-12-07 15:17:42,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d03dd7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:17:42, skipping insertion in model container [2019-12-07 15:17:42,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:17:42" (2/3) ... [2019-12-07 15:17:42,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d03dd7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:17:42, skipping insertion in model container [2019-12-07 15:17:42,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:17:42" (3/3) ... [2019-12-07 15:17:42,546 INFO L109 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2019-12-07 15:17:42,552 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:17:42,556 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-12-07 15:17:42,563 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-12-07 15:17:42,575 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:17:42,575 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 15:17:42,575 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:17:42,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:17:42,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:17:42,576 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:17:42,576 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:17:42,576 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:17:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-12-07 15:17:42,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:17:42,593 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:17:42,594 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:17:42,594 INFO L410 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:17:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:17:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times [2019-12-07 15:17:42,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:17:42,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347460432] [2019-12-07 15:17:42,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:17:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:17:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:17:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:17:42,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347460432] [2019-12-07 15:17:42,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:17:42,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:17:42,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438808476] [2019-12-07 15:17:42,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:17:42,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:17:42,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:17:42,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:17:42,733 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2019-12-07 15:17:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:17:42,824 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-12-07 15:17:42,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:17:42,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 15:17:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:17:42,831 INFO L225 Difference]: With dead ends: 41 [2019-12-07 15:17:42,831 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 15:17:42,832 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:17:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 15:17:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 15:17:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 15:17:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-12-07 15:17:42,856 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2019-12-07 15:17:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:17:42,857 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-12-07 15:17:42,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:17:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-12-07 15:17:42,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:17:42,857 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:17:42,857 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:17:42,857 INFO L410 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 15:17:42,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:17:42,858 INFO L82 PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times [2019-12-07 15:17:42,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:17:42,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71025295] [2019-12-07 15:17:42,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:17:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:17:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:17:42,891 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:17:42,892 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:17:42,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:17:42 BoogieIcfgContainer [2019-12-07 15:17:42,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:17:42,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:17:42,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:17:42,907 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:17:42,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:17:42" (3/4) ... [2019-12-07 15:17:42,909 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:17:42,936 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6df2b686-4fab-4996-9816-5d17f553f007/bin/uautomizer/witness.graphml [2019-12-07 15:17:42,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:17:42,938 INFO L168 Benchmark]: Toolchain (without parser) took 802.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -117.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:17:42,938 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 956.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:17:42,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:17:42,939 INFO L168 Benchmark]: Boogie Preprocessor took 22.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:17:42,939 INFO L168 Benchmark]: RCFGBuilder took 198.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:17:42,940 INFO L168 Benchmark]: TraceAbstraction took 364.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:17:42,940 INFO L168 Benchmark]: Witness Printer took 29.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:17:42,941 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 956.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 198.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 364.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * Witness Printer took 29.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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) VAL [\old(array_size)=2, a={4:3}] [L5] int i; [L6] i = 0 VAL [\old(array_size)=2, a={4:3}, a={4:3}, 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={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L10] COND TRUE j < array_size VAL [\old(array_size)=2, a={4:3}, a={4:3}, array_size=2, i=0, j=1, min=0] [L12] a[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 13 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 42 SDslu, 10 SDs, 0 SdLazy, 45 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, 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, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 230 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...