./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.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_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC --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 0dfe0f165ef563fbd088ad0368faf44ddd32870a .................................................................................................................................................................................................................................................................................... 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 00:29:46,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:46,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:46,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:46,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:46,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:46,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:46,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:46,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:46,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:46,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:46,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:46,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:46,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:46,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:46,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:46,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:46,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:46,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:46,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:46,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:46,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:46,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:46,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:46,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:46,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:46,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:46,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:46,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:46,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:46,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:46,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:46,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:46,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:46,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:46,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:46,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:46,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:46,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:46,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:46,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:46,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-11 00:29:46,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:46,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:46,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:46,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:46,966 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:46,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:46,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:46,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:29:46,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:46,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:46,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:46,969 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 00:29:46,969 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 00:29:46,969 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 00:29:46,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:46,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 00:29:46,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:46,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:46,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:46,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:46,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:46,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:46,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:46,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:46,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:46,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:46,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:46,973 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_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2021-10-11 00:29:47,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:47,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:47,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:47,258 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:47,259 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:47,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2021-10-11 00:29:47,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/data/8d2633d3f/f71e8bb915c44a78a741f68c0196e3ce/FLAG3aa755657 [2021-10-11 00:29:47,915 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:47,916 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2021-10-11 00:29:47,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/data/8d2633d3f/f71e8bb915c44a78a741f68c0196e3ce/FLAG3aa755657 [2021-10-11 00:29:48,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/data/8d2633d3f/f71e8bb915c44a78a741f68c0196e3ce [2021-10-11 00:29:48,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:48,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-11 00:29:48,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:48,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:48,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:48,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a83c519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48, skipping insertion in model container [2021-10-11 00:29:48,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:48,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:48,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:48,532 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:48,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:48,564 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:48,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48 WrapperNode [2021-10-11 00:29:48,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:48,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:48,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:48,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:48,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... [2021-10-11 00:29:48,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:48,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:48,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:48,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:48,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/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 00:29:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-11 00:29:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-10-11 00:29:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-11 00:29:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-10-11 00:29:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:29:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-11 00:29:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:29:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:29:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-11 00:29:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:49,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:49,152 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-11 00:29:49,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:49 BoogieIcfgContainer [2021-10-11 00:29:49,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:49,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:49,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:49,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:49,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:48" (1/3) ... [2021-10-11 00:29:49,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6750ec6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:49, skipping insertion in model container [2021-10-11 00:29:49,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:48" (2/3) ... [2021-10-11 00:29:49,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6750ec6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:49, skipping insertion in model container [2021-10-11 00:29:49,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:49" (3/3) ... [2021-10-11 00:29:49,166 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-write.c [2021-10-11 00:29:49,181 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:49,184 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 00:29:49,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 00:29:49,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:49,227 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 00:29:49,227 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:49,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:49,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:49,227 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:49,227 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:49,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-10-11 00:29:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:29:49,260 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:49,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:49,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:29:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:49,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2021-10-11 00:29:49,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:49,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513332573] [2021-10-11 00:29:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:29:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:49,561 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 00:29:49,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513332573] [2021-10-11 00:29:49,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:49,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:49,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725330570] [2021-10-11 00:29:49,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:49,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:49,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:49,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:49,591 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2021-10-11 00:29:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:49,901 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-10-11 00:29:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:49,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 00:29:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:49,917 INFO L225 Difference]: With dead ends: 58 [2021-10-11 00:29:49,917 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 00:29:49,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 00:29:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2021-10-11 00:29:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:29:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-11 00:29:49,966 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2021-10-11 00:29:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:49,967 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-11 00:29:49,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-11 00:29:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:29:49,969 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:49,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:49,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:49,970 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:29:49,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:49,971 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2021-10-11 00:29:49,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:49,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422609204] [2021-10-11 00:29:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:50,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:50,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:50,049 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:50,049 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:29:50,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:29:50,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:29:50 BoogieIcfgContainer [2021-10-11 00:29:50,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:29:50,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:50,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:50,071 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:50,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:49" (3/4) ... [2021-10-11 00:29:50,073 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:29:50,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36a6a05-c679-445e-a722-6b2cedc9addd/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:29:50,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:50,123 INFO L168 Benchmark]: Toolchain (without parser) took 1831.30 ms. Allocated memory was 107.0 MB in the beginning and 155.2 MB in the end (delta: 48.2 MB). Free memory was 78.6 MB in the beginning and 72.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:50,123 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:50,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.38 ms. Allocated memory was 107.0 MB in the beginning and 155.2 MB in the end (delta: 48.2 MB). Free memory was 78.4 MB in the beginning and 129.5 MB in the end (delta: -51.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:50,126 INFO L168 Benchmark]: Boogie Preprocessor took 36.86 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 128.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:50,127 INFO L168 Benchmark]: RCFGBuilder took 549.86 ms. Allocated memory is still 155.2 MB. Free memory was 127.9 MB in the beginning and 112.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:50,130 INFO L168 Benchmark]: TraceAbstraction took 913.58 ms. Allocated memory is still 155.2 MB. Free memory was 112.3 MB in the beginning and 74.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:50,131 INFO L168 Benchmark]: Witness Printer took 44.81 ms. Allocated memory is still 155.2 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:50,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.38 ms. Allocated memory was 107.0 MB in the beginning and 155.2 MB in the end (delta: 48.2 MB). Free memory was 78.4 MB in the beginning and 129.5 MB in the end (delta: -51.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.86 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 128.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 549.86 ms. Allocated memory is still 155.2 MB. Free memory was 127.9 MB in the beginning and 112.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 913.58 ms. Allocated memory is still 155.2 MB. Free memory was 112.3 MB in the beginning and 74.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 44.81 ms. Allocated memory is still 155.2 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.6 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 VAL [b={2:0}, i=0] [L22] COND TRUE i < 100 VAL [b={2:0}, i=0] [L23] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 64 SolverSat, 7 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=40occurred 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, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 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...