./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:20:14,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:20:14,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:20:14,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:20:14,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:20:14,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:20:14,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:20:14,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:20:14,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:20:14,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:20:14,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:20:14,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:20:14,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:20:14,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:20:14,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:20:14,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:20:14,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:20:14,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:20:14,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:20:14,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:20:14,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:20:14,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:20:14,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:20:14,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:20:14,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:20:14,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:20:14,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:20:14,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:20:14,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:20:14,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:20:14,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:20:14,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:20:14,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:20:14,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:20:14,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:20:14,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:20:14,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:20:14,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:20:14,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:20:14,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:20:14,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:20:14,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 20:20:14,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:20:14,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:20:14,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:20:14,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:20:14,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:20:14,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:20:14,709 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:20:14,709 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:20:14,709 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:20:14,709 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:20:14,710 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:20:14,711 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:20:14,711 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:20:14,711 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:20:14,711 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:20:14,711 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:20:14,712 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:20:14,712 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:20:14,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 20:20:14,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 20:20:14,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:20:14,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:20:14,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 20:20:14,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:20:14,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:20:14,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:20:14,715 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 20:20:14,716 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 20:20:14,716 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 20:20:14,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:20:14,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:20:14,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:20:14,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:20:14,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:20:14,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:20:14,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:20:14,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:20:14,718 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:20:14,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:20:14,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:20:14,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:20:14,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:20:14,719 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_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 [2022-11-16 20:20:15,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:20:15,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:20:15,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:20:15,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:20:15,055 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:20:15,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2022-11-16 20:20:15,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/data/aa97d0a08/2df5915ffdfc47e0bd461916cc5beb36/FLAG151ed66ae [2022-11-16 20:20:15,631 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:20:15,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2022-11-16 20:20:15,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/data/aa97d0a08/2df5915ffdfc47e0bd461916cc5beb36/FLAG151ed66ae [2022-11-16 20:20:16,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/data/aa97d0a08/2df5915ffdfc47e0bd461916cc5beb36 [2022-11-16 20:20:16,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:20:16,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:20:16,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:20:16,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:20:16,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:20:16,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541c8ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16, skipping insertion in model container [2022-11-16 20:20:16,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:20:16,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:20:16,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:20:16,270 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:20:16,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:20:16,313 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:20:16,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16 WrapperNode [2022-11-16 20:20:16,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:20:16,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:20:16,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:20:16,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:20:16,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,364 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2022-11-16 20:20:16,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:20:16,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:20:16,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:20:16,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:20:16,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:20:16,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:20:16,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:20:16,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:20:16,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:20:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:20:16,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:20:16,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:20:16,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:20:16,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:20:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:20:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:20:16,544 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:20:16,546 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:20:16,813 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:20:16,890 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:20:16,906 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 20:20:16,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:20:16 BoogieIcfgContainer [2022-11-16 20:20:16,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:20:16,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:20:16,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:20:16,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:20:16,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:20:16" (1/3) ... [2022-11-16 20:20:16,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431bfb36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:20:16, skipping insertion in model container [2022-11-16 20:20:16,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16" (2/3) ... [2022-11-16 20:20:16,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431bfb36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:20:16, skipping insertion in model container [2022-11-16 20:20:16,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:20:16" (3/3) ... [2022-11-16 20:20:16,929 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe.c [2022-11-16 20:20:16,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:20:16,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-16 20:20:17,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:20:17,031 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b89c446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:20:17,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 20:20:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 10 states have (on average 2.5) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:20:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 20:20:17,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:17,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 20:20:17,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-16 20:20:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash 91537, now seen corresponding path program 1 times [2022-11-16 20:20:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:17,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811493280] [2022-11-16 20:20:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:20:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:20:17,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:20:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811493280] [2022-11-16 20:20:17,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811493280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:20:17,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:20:17,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 20:20:17,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858089343] [2022-11-16 20:20:17,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:20:17,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:20:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:20:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:20:17,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:20:17,336 INFO L87 Difference]: Start difference. First operand has 24 states, 10 states have (on average 2.5) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:20:17,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:20:17,419 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-16 20:20:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:20:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 20:20:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:20:17,432 INFO L225 Difference]: With dead ends: 23 [2022-11-16 20:20:17,432 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 20:20:17,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:20:17,440 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:20:17,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:20:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 20:20:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 20:20:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:20:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-16 20:20:17,478 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 3 [2022-11-16 20:20:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:20:17,478 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-16 20:20:17,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:20:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-16 20:20:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:20:17,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:17,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:20:17,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:20:17,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-16 20:20:17,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:17,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2780751, now seen corresponding path program 1 times [2022-11-16 20:20:17,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:17,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063282718] [2022-11-16 20:20:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:17,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:20:17,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:20:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:20:17,560 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:20:17,561 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:20:17,563 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2022-11-16 20:20:17,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-11-16 20:20:17,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-11-16 20:20:17,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-11-16 20:20:17,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-11-16 20:20:17,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-11-16 20:20:17,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-11-16 20:20:17,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-11-16 20:20:17,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2022-11-16 20:20:17,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2022-11-16 20:20:17,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2022-11-16 20:20:17,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-11-16 20:20:17,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2022-11-16 20:20:17,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:20:17,571 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 20:20:17,576 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:20:17,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:20:17 BoogieIcfgContainer [2022-11-16 20:20:17,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:20:17,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:20:17,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:20:17,604 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:20:17,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:20:16" (3/4) ... [2022-11-16 20:20:17,608 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 20:20:17,659 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:20:17,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:20:17,660 INFO L158 Benchmark]: Toolchain (without parser) took 1642.57ms. Allocated memory is still 132.1MB. Free memory was 96.8MB in the beginning and 65.5MB in the end (delta: 31.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2022-11-16 20:20:17,660 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 132.1MB. Free memory is still 112.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:20:17,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.00ms. Allocated memory is still 132.1MB. Free memory was 96.7MB in the beginning and 110.2MB in the end (delta: -13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 20:20:17,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.63ms. Allocated memory is still 132.1MB. Free memory was 110.2MB in the beginning and 108.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:20:17,661 INFO L158 Benchmark]: Boogie Preprocessor took 25.26ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 107.4MB in the end (delta: 830.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:20:17,662 INFO L158 Benchmark]: RCFGBuilder took 518.38ms. Allocated memory is still 132.1MB. Free memory was 107.4MB in the beginning and 92.9MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 20:20:17,662 INFO L158 Benchmark]: TraceAbstraction took 691.37ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 66.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 20:20:17,663 INFO L158 Benchmark]: Witness Printer took 55.76ms. Allocated memory is still 132.1MB. Free memory was 66.9MB in the beginning and 65.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:20:17,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 132.1MB. Free memory is still 112.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.00ms. Allocated memory is still 132.1MB. Free memory was 96.7MB in the beginning and 110.2MB in the end (delta: -13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.63ms. Allocated memory is still 132.1MB. Free memory was 110.2MB in the beginning and 108.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.26ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 107.4MB in the end (delta: 830.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 518.38ms. Allocated memory is still 132.1MB. Free memory was 107.4MB in the beginning and 92.9MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 691.37ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 66.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 55.76ms. Allocated memory is still 132.1MB. Free memory was 66.9MB in the beginning and 65.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L23] int *a; [L24] int array_size = __VERIFIER_nondet_int(); [L25] CALL SelectionSort(a, array_size) [L5] int i; [L6] i = 0 VAL [\old(array_size)=2, a={5:3}, a={5:3}, array_size=2, i=0] [L6] COND TRUE i < array_size - 1 [L8] int j, min, temp; [L9] min = i [L10] j = i+1 VAL [\old(array_size)=2, a={5:3}, a={5:3}, array_size=2, i=0, j=1, min=0] [L10] COND TRUE j < array_size VAL [\old(array_size)=2, a={5:3}, a={5:3}, array_size=2, i=0, j=1, min=0] [L12] a[j] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 20:20:17,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89847048-e42b-4128-9d75-f5661ee8f212/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)