./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI --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 aeae4642ea0f346b37f312868ec7e7128e333d20 ......................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 02:23:30,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:30,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:30,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:30,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:30,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:30,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:30,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:30,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:30,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:30,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:30,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:30,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:30,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:30,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:30,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:30,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:30,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:30,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:30,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:30,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:30,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:30,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:30,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:30,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:30,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:30,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:30,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:30,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:30,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:30,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:30,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:30,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:30,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:30,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:30,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:30,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:30,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:30,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:30,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:30,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:30,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:23:30,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:30,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:30,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:30,884 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:30,884 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:30,885 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:30,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:30,885 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:30,885 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:30,886 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:30,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:30,887 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:30,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:30,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:30,888 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:30,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:23:30,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:23:30,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:30,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:30,890 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:23:30,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:30,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:30,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:30,891 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:23:30,891 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:23:30,892 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:23:30,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:30,894 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:30,895 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:30,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:30,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:30,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:30,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:30,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:30,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:30,897 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:30,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:30,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:30,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:30,898 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aeae4642ea0f346b37f312868ec7e7128e333d20 [2021-10-11 02:23:31,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:31,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:31,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:31,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:31,221 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:31,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2021-10-11 02:23:31,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/data/c20a8b42e/0b4fc597d9d347e3a4d2db335956d23a/FLAG01e1a30de [2021-10-11 02:23:31,811 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:31,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2021-10-11 02:23:31,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/data/c20a8b42e/0b4fc597d9d347e3a4d2db335956d23a/FLAG01e1a30de [2021-10-11 02:23:32,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/data/c20a8b42e/0b4fc597d9d347e3a4d2db335956d23a [2021-10-11 02:23:32,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:32,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:32,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:32,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:32,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:32,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ade6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32, skipping insertion in model container [2021-10-11 02:23:32,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:32,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:32,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:32,379 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:32,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:32,412 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:32,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32 WrapperNode [2021-10-11 02:23:32,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:32,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:32,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:32,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:32,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:32,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:32,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:32,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:32,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:32,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:32,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:32,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:32,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:23:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:32,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:33,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:33,146 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-11 02:23:33,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:33 BoogieIcfgContainer [2021-10-11 02:23:33,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:33,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:33,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:33,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:33,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:32" (1/3) ... [2021-10-11 02:23:33,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad0439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:33, skipping insertion in model container [2021-10-11 02:23:33,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (2/3) ... [2021-10-11 02:23:33,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad0439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:33, skipping insertion in model container [2021-10-11 02:23:33,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:33" (3/3) ... [2021-10-11 02:23:33,170 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-read.c [2021-10-11 02:23:33,187 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:33,192 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:23:33,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:23:33,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:33,238 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:23:33,238 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:33,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:33,238 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:33,238 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:33,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:33,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:23:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:23:33,262 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:33,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:23:33,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:33,271 INFO L82 PathProgramCache]: Analyzing trace with hash 3091232, now seen corresponding path program 1 times [2021-10-11 02:23:33,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:33,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610930499] [2021-10-11 02:23:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:33,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610930499] [2021-10-11 02:23:33,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:33,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:33,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622157289] [2021-10-11 02:23:33,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:33,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:33,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:33,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:33,526 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2021-10-11 02:23:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:33,604 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-10-11 02:23:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:33,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:23:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:33,619 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:23:33,620 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:23:33,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:33,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:23:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2021-10-11 02:23:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:23:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-11 02:23:33,712 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2021-10-11 02:23:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:33,712 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 02:23:33,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-11 02:23:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:23:33,713 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:33,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:23:33,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:33,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:23:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash 3019078, now seen corresponding path program 1 times [2021-10-11 02:23:33,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:33,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498487618] [2021-10-11 02:23:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:33,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:33,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:33,835 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:23:33,836 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:23:33,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:33,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:33 BoogieIcfgContainer [2021-10-11 02:23:33,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:33,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:33,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:33,871 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:33,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:33" (3/4) ... [2021-10-11 02:23:33,874 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:23:33,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e39aa4-588b-47ed-89c3-750e89afc32b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:33,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:33,931 INFO L168 Benchmark]: Toolchain (without parser) took 1739.66 ms. Allocated memory is still 102.8 MB. Free memory was 68.8 MB in the beginning and 72.6 MB in the end (delta: -3.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:33,932 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 72.5 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:33,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.08 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 79.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.56 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 78.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,943 INFO L168 Benchmark]: Boogie Preprocessor took 24.97 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 76.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:33,944 INFO L168 Benchmark]: RCFGBuilder took 667.81 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 55.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,945 INFO L168 Benchmark]: TraceAbstraction took 719.70 ms. Allocated memory is still 102.8 MB. Free memory was 55.1 MB in the beginning and 74.3 MB in the end (delta: -19.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:33,946 INFO L168 Benchmark]: Witness Printer took 55.08 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:33,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 72.5 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.08 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 79.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.56 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 78.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.97 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 76.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 667.81 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 55.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 719.70 ms. Allocated memory is still 102.8 MB. Free memory was 55.1 MB in the beginning and 74.3 MB in the end (delta: -19.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.08 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.7 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: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; [L22] i = 0 [L22] COND TRUE i < 100 [L13] int a[n], i; [L14] i = 0 [L14] COND TRUE i < size + 1 [L15] a[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 18 SDslu, 8 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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...