./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/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 0.1.24-cad4683 [2019-11-16 00:26:01,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:26:01,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:26:01,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:26:01,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:26:01,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:26:01,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:26:01,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:26:01,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:26:01,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:26:01,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:26:01,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:26:01,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:26:01,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:26:01,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:26:01,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:26:01,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:26:01,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:26:01,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:26:01,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:26:01,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:26:01,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:26:01,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:26:01,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:26:01,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:26:01,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:26:01,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:26:01,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:26:01,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:26:01,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:26:01,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:26:01,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:26:01,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:26:01,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:26:01,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:26:01,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:26:01,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:26:01,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:26:01,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:26:01,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:26:01,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:26:01,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-16 00:26:01,634 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:26:01,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:26:01,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:26:01,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:26:01,639 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:26:01,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:26:01,640 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:26:01,640 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:26:01,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:26:01,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:26:01,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:26:01,642 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-16 00:26:01,642 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-16 00:26:01,642 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-16 00:26:01,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:26:01,643 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:26:01,643 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:26:01,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:26:01,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:26:01,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:26:01,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:26:01,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:26:01,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:26:01,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:26:01,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:26:01,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:26:01,646 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_5d4a6010-fe67-4e3e-9592-98e7aa321052/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 [2019-11-16 00:26:01,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:26:01,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:26:01,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:26:01,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:26:01,717 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:26:01,719 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2019-11-16 00:26:01,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/data/1b0fdc8d2/cce4ee37afc44daab150d28b9e6ab651/FLAG75deb5be2 [2019-11-16 00:26:02,196 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:26:02,196 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2019-11-16 00:26:02,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/data/1b0fdc8d2/cce4ee37afc44daab150d28b9e6ab651/FLAG75deb5be2 [2019-11-16 00:26:02,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/data/1b0fdc8d2/cce4ee37afc44daab150d28b9e6ab651 [2019-11-16 00:26:02,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:26:02,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-16 00:26:02,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:26:02,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:26:02,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:26:02,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d7c4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02, skipping insertion in model container [2019-11-16 00:26:02,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,590 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:26:02,604 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:26:02,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:26:02,810 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:26:02,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:26:02,839 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:26:02,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02 WrapperNode [2019-11-16 00:26:02,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:26:02,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:26:02,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:26:02,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:26:02,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... [2019-11-16 00:26:02,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:26:02,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:26:02,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:26:02,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:26:02,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/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 [2019-11-16 00:26:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-16 00:26:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:26:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2019-11-16 00:26:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-16 00:26:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-16 00:26:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2019-11-16 00:26:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-16 00:26:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:26:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-16 00:26:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-16 00:26:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:26:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:26:03,176 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:26:03,176 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-16 00:26:03,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:26:03 BoogieIcfgContainer [2019-11-16 00:26:03,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:26:03,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:26:03,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:26:03,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:26:03,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:26:02" (1/3) ... [2019-11-16 00:26:03,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ae7a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:26:03, skipping insertion in model container [2019-11-16 00:26:03,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:02" (2/3) ... [2019-11-16 00:26:03,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ae7a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:26:03, skipping insertion in model container [2019-11-16 00:26:03,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:26:03" (3/3) ... [2019-11-16 00:26:03,185 INFO L109 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2019-11-16 00:26:03,194 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:26:03,200 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-11-16 00:26:03,210 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-11-16 00:26:03,227 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:26:03,227 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-16 00:26:03,228 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:26:03,228 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:26:03,228 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:26:03,228 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:26:03,228 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:26:03,228 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:26:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-16 00:26:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-16 00:26:03,251 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:26:03,252 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:26:03,253 INFO L410 AbstractCegarLoop]: === Iteration 1 === [SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-16 00:26:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:26:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash 229154885, now seen corresponding path program 1 times [2019-11-16 00:26:03,265 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:26:03,266 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026421878] [2019-11-16 00:26:03,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:26:03,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:26:03,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:26:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:26:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:26:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:26:03,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026421878] [2019-11-16 00:26:03,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:26:03,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-16 00:26:03,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060239407] [2019-11-16 00:26:03,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:26:03,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:26:03,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:26:03,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:26:03,469 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2019-11-16 00:26:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:26:03,644 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-11-16 00:26:03,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:26:03,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-16 00:26:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:26:03,659 INFO L225 Difference]: With dead ends: 41 [2019-11-16 00:26:03,659 INFO L226 Difference]: Without dead ends: 34 [2019-11-16 00:26:03,662 INFO L600 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 [2019-11-16 00:26:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-16 00:26:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-16 00:26:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-16 00:26:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-16 00:26:03,708 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2019-11-16 00:26:03,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:26:03,710 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-16 00:26:03,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:26:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-16 00:26:03,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-16 00:26:03,711 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:26:03,711 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:26:03,711 INFO L410 AbstractCegarLoop]: === Iteration 2 === [SelectionSortErr2REQUIRES_VIOLATION, SelectionSortErr3REQUIRES_VIOLATION, SelectionSortErr8REQUIRES_VIOLATION, SelectionSortErr9REQUIRES_VIOLATION, SelectionSortErr4REQUIRES_VIOLATION, SelectionSortErr5REQUIRES_VIOLATION, SelectionSortErr10REQUIRES_VIOLATION, SelectionSortErr11REQUIRES_VIOLATION, SelectionSortErr0REQUIRES_VIOLATION, SelectionSortErr1REQUIRES_VIOLATION, SelectionSortErr6REQUIRES_VIOLATION, SelectionSortErr7REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-11-16 00:26:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:26:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash 229154931, now seen corresponding path program 1 times [2019-11-16 00:26:03,712 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:26:03,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584458310] [2019-11-16 00:26:03,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:26:03,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:26:03,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:26:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:26:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:26:03,775 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:26:03,775 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-16 00:26:03,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:26:03 BoogieIcfgContainer [2019-11-16 00:26:03,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:26:03,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:26:03,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:26:03,793 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:26:03,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:26:03" (3/4) ... [2019-11-16 00:26:03,796 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-16 00:26:03,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5d4a6010-fe67-4e3e-9592-98e7aa321052/bin/uautomizer/witness.graphml [2019-11-16 00:26:03,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:26:03,837 INFO L168 Benchmark]: Toolchain (without parser) took 1260.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -118.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2019-11-16 00:26:03,837 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:26:03,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-16 00:26:03,838 INFO L168 Benchmark]: Boogie Preprocessor took 37.49 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. [2019-11-16 00:26:03,839 INFO L168 Benchmark]: RCFGBuilder took 299.88 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:26:03,839 INFO L168 Benchmark]: TraceAbstraction took 613.77 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: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:26:03,840 INFO L168 Benchmark]: Witness Printer took 41.72 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. [2019-11-16 00:26:03,842 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.49 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 299.88 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 613.77 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: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. * Witness Printer took 41.72 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: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 0.0s 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...