./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c -s /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-a4ecdab [2020-11-29 19:39:39,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:39:39,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:39:39,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:39:39,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:39:39,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:39:39,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:39:39,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:39:39,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:39:39,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:39:39,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:39:39,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:39:39,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:39:39,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:39:39,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:39:39,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:39:39,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:39:39,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:39:39,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:39:39,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:39:39,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:39:39,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:39:39,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:39:39,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:39:39,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:39:39,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:39:39,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:39:39,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:39:39,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:39:39,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:39:39,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:39:39,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:39:39,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:39:39,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:39:39,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:39:39,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:39:39,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:39:39,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:39:39,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:39:39,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:39:39,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:39:39,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 19:39:39,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:39:39,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:39:39,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:39:39,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:39:39,789 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:39:39,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:39:39,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:39:39,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:39:39,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:39:39,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:39:39,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:39:39,793 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:39:39,793 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:39:39,793 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:39:39,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:39:39,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:39:39,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:39:39,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:39:39,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:39:39,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:39:39,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:39:39,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:39:39,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:39:39,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:39:39,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:39:39,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:39:39,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:39:39,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:39:39,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aeae4642ea0f346b37f312868ec7e7128e333d20 [2020-11-29 19:39:40,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:39:40,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:39:40,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:39:40,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:39:40,167 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:39:40,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-11-29 19:39:40,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/data/be1d5bbe1/52111118d9b841d89c47d90e9dbf79ae/FLAGab88a956b [2020-11-29 19:39:40,851 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:39:40,852 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-read.c [2020-11-29 19:39:40,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/data/be1d5bbe1/52111118d9b841d89c47d90e9dbf79ae/FLAGab88a956b [2020-11-29 19:39:41,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/data/be1d5bbe1/52111118d9b841d89c47d90e9dbf79ae [2020-11-29 19:39:41,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:39:41,243 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:39:41,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:41,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:39:41,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:39:41,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd98107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41, skipping insertion in model container [2020-11-29 19:39:41,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:39:41,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:39:41,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:41,567 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:39:41,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:41,609 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:39:41,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41 WrapperNode [2020-11-29 19:39:41,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:41,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:39:41,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:39:41,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:39:41,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... [2020-11-29 19:39:41,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:39:41,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:39:41,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:39:41,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:39:41,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:39:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:39:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:39:41,753 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-29 19:39:41,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:39:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-29 19:39:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:39:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:39:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:39:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:39:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:39:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:39:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:39:42,158 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:39:42,159 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-29 19:39:42,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:42 BoogieIcfgContainer [2020-11-29 19:39:42,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:39:42,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:39:42,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:39:42,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:39:42,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:39:41" (1/3) ... [2020-11-29 19:39:42,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70df8670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:39:42, skipping insertion in model container [2020-11-29 19:39:42,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:41" (2/3) ... [2020-11-29 19:39:42,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70df8670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:39:42, skipping insertion in model container [2020-11-29 19:39:42,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:42" (3/3) ... [2020-11-29 19:39:42,177 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-read.c [2020-11-29 19:39:42,187 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:39:42,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 19:39:42,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 19:39:42,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:39:42,227 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:39:42,227 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:39:42,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:39:42,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:39:42,227 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:39:42,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:39:42,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:39:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-29 19:39:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:39:42,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:42,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:42,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 19:39:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:42,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1189570050, now seen corresponding path program 1 times [2020-11-29 19:39:42,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:42,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122567919] [2020-11-29 19:39:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:42,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:39:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:39:42,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122567919] [2020-11-29 19:39:42,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:42,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:39:42,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014248197] [2020-11-29 19:39:42,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:39:42,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:42,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:39:42,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:39:42,589 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-11-29 19:39:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:42,821 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-11-29 19:39:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:39:42,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:39:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:39:42,833 INFO L225 Difference]: With dead ends: 46 [2020-11-29 19:39:42,834 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 19:39:42,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:39:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 19:39:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-11-29 19:39:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:39:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-29 19:39:42,883 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 10 [2020-11-29 19:39:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:39:42,884 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-29 19:39:42,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:39:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-29 19:39:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:39:42,885 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:39:42,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:39:42,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:39:42,886 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 19:39:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:42,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1775375512, now seen corresponding path program 1 times [2020-11-29 19:39:42,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:42,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843060753] [2020-11-29 19:39:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:42,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:42,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:42,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:42,956 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:39:42,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:39:42,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:39:42 BoogieIcfgContainer [2020-11-29 19:39:42,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:39:42,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:39:42,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:39:42,990 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:39:42,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:42" (3/4) ... [2020-11-29 19:39:42,993 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:39:43,050 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_29da1c89-6cb0-49e1-9deb-9b33d65c58e2/bin/uautomizer/witness.graphml [2020-11-29 19:39:43,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:39:43,059 INFO L168 Benchmark]: Toolchain (without parser) took 1808.27 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 50.8 MB in the beginning and 62.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:43,060 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:43,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.19 ms. Allocated memory is still 81.8 MB. Free memory was 50.6 MB in the beginning and 59.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:43,062 INFO L168 Benchmark]: Boogie Preprocessor took 55.08 ms. Allocated memory is still 81.8 MB. Free memory was 59.1 MB in the beginning and 57.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:43,063 INFO L168 Benchmark]: RCFGBuilder took 492.42 ms. Allocated memory is still 81.8 MB. Free memory was 57.7 MB in the beginning and 42.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:43,067 INFO L168 Benchmark]: TraceAbstraction took 825.54 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 42.3 MB in the beginning and 64.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:43,068 INFO L168 Benchmark]: Witness Printer took 61.56 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 62.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:43,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.19 ms. Allocated memory is still 81.8 MB. Free memory was 50.6 MB in the beginning and 59.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.08 ms. Allocated memory is still 81.8 MB. Free memory was 59.1 MB in the beginning and 57.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 492.42 ms. Allocated memory is still 81.8 MB. Free memory was 57.7 MB in the beginning and 42.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 825.54 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 42.3 MB in the beginning and 64.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 61.56 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 62.3 MB in the end (delta: 1.9 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) VAL [\old(n)=0, \old(size)=0, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L14] COND TRUE i < size + 1 VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] [L15] a[i] VAL [\old(n)=0, \old(size)=0, b={2:0}, b={2:0}, i=0, n=0, size=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 27 SDslu, 14 SDs, 0 SdLazy, 53 SolverSat, 6 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 7 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...