./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/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 0.2.0-a4ecdab [2020-11-28 03:03:49,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:03:49,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:03:50,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:03:50,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:03:50,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:03:50,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:03:50,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:03:50,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:03:50,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:03:50,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:03:50,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:03:50,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:03:50,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:03:50,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:03:50,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:03:50,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:03:50,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:03:50,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:03:50,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:03:50,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:03:50,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:03:50,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:03:50,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:03:50,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:03:50,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:03:50,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:03:50,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:03:50,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:03:50,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:03:50,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:03:50,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:03:50,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:03:50,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:03:50,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:03:50,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:03:50,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:03:50,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:03:50,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:03:50,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:03:50,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:03:50,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:03:50,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:03:50,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:03:50,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:03:50,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:03:50,139 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:03:50,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:03:50,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:03:50,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:03:50,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:03:50,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:03:50,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:03:50,142 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:03:50,142 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:03:50,143 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:03:50,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:03:50,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:03:50,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:03:50,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:03:50,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:03:50,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:03:50,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:03:50,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:03:50,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:03:50,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:03:50,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:03:50,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:03:50,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:03:50,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:03:50,146 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:/tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74d770113cb1f1dff37024c2e31ce0944e8f2983 [2020-11-28 03:03:50,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:03:50,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:03:50,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:03:50,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:03:50,458 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:03:50,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2020-11-28 03:03:50,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/data/48b3530fc/6373a31e652f46b186594fba0dcb24f9/FLAG8fa1c15ce [2020-11-28 03:03:51,132 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:03:51,133 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2020-11-28 03:03:51,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/data/48b3530fc/6373a31e652f46b186594fba0dcb24f9/FLAG8fa1c15ce [2020-11-28 03:03:51,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/data/48b3530fc/6373a31e652f46b186594fba0dcb24f9 [2020-11-28 03:03:51,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:03:51,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:03:51,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:51,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:03:51,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:03:51,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70079cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51, skipping insertion in model container [2020-11-28 03:03:51,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:03:51,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:03:51,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:51,746 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:03:51,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:51,771 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:03:51,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51 WrapperNode [2020-11-28 03:03:51,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:51,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:03:51,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:03:51,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:03:51,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... [2020-11-28 03:03:51,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:03:51,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:03:51,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:03:51,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:03:51,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/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 [2020-11-28 03:03:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:03:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:03:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2020-11-28 03:03:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:03:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:03:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2020-11-28 03:03:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:03:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:03:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:03:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:03:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:03:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:03:52,255 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:03:52,256 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:03:52,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:52 BoogieIcfgContainer [2020-11-28 03:03:52,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:03:52,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:03:52,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:03:52,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:03:52,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:51" (1/3) ... [2020-11-28 03:03:52,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c842c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:52, skipping insertion in model container [2020-11-28 03:03:52,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:51" (2/3) ... [2020-11-28 03:03:52,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c842c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:52, skipping insertion in model container [2020-11-28 03:03:52,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:52" (3/3) ... [2020-11-28 03:03:52,271 INFO L111 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2020-11-28 03:03:52,280 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:03:52,283 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-11-28 03:03:52,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-11-28 03:03:52,312 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:03:52,313 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:03:52,313 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:03:52,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:03:52,313 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:03:52,313 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:03:52,313 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:03:52,314 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:03:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-28 03:03:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:03:52,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:52,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:52,337 INFO L429 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]=== [2020-11-28 03:03:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times [2020-11-28 03:03:52,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:52,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581200685] [2020-11-28 03:03:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:52,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581200685] [2020-11-28 03:03:52,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:52,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:52,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383404378] [2020-11-28 03:03:52,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:52,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:52,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:52,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:52,601 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-11-28 03:03:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:52,803 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-11-28 03:03:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:03:52,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:03:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:52,826 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:03:52,826 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:03:52,827 INFO L677 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 [2020-11-28 03:03:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:03:52,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 03:03:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:03:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-11-28 03:03:52,877 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2020-11-28 03:03:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:52,877 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-11-28 03:03:52,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-11-28 03:03:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:03:52,878 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:52,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:52,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:03:52,879 INFO L429 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]=== [2020-11-28 03:03:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:52,880 INFO L82 PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times [2020-11-28 03:03:52,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:52,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236320157] [2020-11-28 03:03:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:03:52,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:03:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:03:52,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:03:52,949 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:03:52,950 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:03:52,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:03:52,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:03:52 BoogieIcfgContainer [2020-11-28 03:03:52,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:03:52,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:03:52,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:03:52,973 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:03:52,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:52" (3/4) ... [2020-11-28 03:03:52,975 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:03:53,012 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1ac58b80-f1ae-43a6-bf8d-b5de3406afde/bin/uautomizer/witness.graphml [2020-11-28 03:03:53,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:03:53,015 INFO L168 Benchmark]: Toolchain (without parser) took 1462.72 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.2 MB in the beginning and 65.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:53,016 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 88.1 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:03:53,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.95 ms. Allocated memory is still 88.1 MB. Free memory was 57.0 MB in the beginning and 65.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:53,017 INFO L168 Benchmark]: Boogie Preprocessor took 29.07 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:53,018 INFO L168 Benchmark]: RCFGBuilder took 454.94 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 48.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:53,019 INFO L168 Benchmark]: TraceAbstraction took 713.17 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 48.4 MB in the beginning and 67.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:53,019 INFO L168 Benchmark]: Witness Printer took 40.26 ms. Allocated memory is still 115.3 MB. Free memory was 67.4 MB in the beginning and 65.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:53,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 88.1 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.95 ms. Allocated memory is still 88.1 MB. Free memory was 57.0 MB in the beginning and 65.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.07 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 454.94 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 48.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 713.17 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 48.4 MB in the beginning and 67.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 40.26 ms. Allocated memory is still 115.3 MB. Free memory was 67.4 MB in the beginning and 65.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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={6:5}] [L5] int i; [L6] i = 0 VAL [\old(array_size)=2, a={6:5}, a={6:5}, 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={6:5}, a={6:5}, array_size=2, i=0, j=1, min=0] [L10] COND TRUE j < array_size VAL [\old(array_size)=2, a={6:5}, a={6:5}, 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. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 42 SDslu, 10 SDs, 0 SdLazy, 45 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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, 0.1s 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...