./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/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 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-a4ecdab [2020-11-28 03:16:53,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:53,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:53,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:53,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:53,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:53,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:53,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:53,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:53,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:53,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:53,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:53,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:53,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:53,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:53,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:53,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:53,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:53,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:53,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:53,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:53,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:53,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:53,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:53,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:53,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:53,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:53,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:53,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:53,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:53,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:53,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:53,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:53,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:53,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:53,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:53,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:53,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:53,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:53,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:53,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:53,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:16:53,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:53,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:53,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:53,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:53,179 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:53,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:53,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:53,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:16:53,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:53,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:53,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:53,182 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:16:53,182 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:16:53,182 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:16:53,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:53,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:16:53,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:53,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:53,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:53,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:53,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:53,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:53,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:53,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:53,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:53,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:53,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:53,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:53,192 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_a0401310-a7db-4b1c-aaee-829f12f6009d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2020-11-28 03:16:53,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:53,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:53,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:53,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:53,505 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:53,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-11-28 03:16:53,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/data/63e1c0ee4/dfa6d907cd234e25ab621d1f134827e9/FLAGbcd916653 [2020-11-28 03:16:54,168 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:54,169 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2020-11-28 03:16:54,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/data/63e1c0ee4/dfa6d907cd234e25ab621d1f134827e9/FLAGbcd916653 [2020-11-28 03:16:54,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/data/63e1c0ee4/dfa6d907cd234e25ab621d1f134827e9 [2020-11-28 03:16:54,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:54,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:16:54,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:54,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:54,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:54,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74603725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54, skipping insertion in model container [2020-11-28 03:16:54,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:54,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:54,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:54,745 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:54,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:54,785 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:54,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54 WrapperNode [2020-11-28 03:16:54,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:54,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:54,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:54,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:54,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... [2020-11-28 03:16:54,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:54,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:54,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:54,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:54,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/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 [2020-11-28 03:16:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:16:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-28 03:16:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:16:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:55,494 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:55,494 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-28 03:16:55,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:55 BoogieIcfgContainer [2020-11-28 03:16:55,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:55,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:55,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:55,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:55,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:54" (1/3) ... [2020-11-28 03:16:55,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df90e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:55, skipping insertion in model container [2020-11-28 03:16:55,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:54" (2/3) ... [2020-11-28 03:16:55,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df90e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:55, skipping insertion in model container [2020-11-28 03:16:55,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:55" (3/3) ... [2020-11-28 03:16:55,510 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-write.c [2020-11-28 03:16:55,524 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:55,530 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-28 03:16:55,542 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-28 03:16:55,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:55,579 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:16:55,579 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:55,579 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:55,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:55,580 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:55,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:55,584 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:55,605 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-28 03:16:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:16:55,616 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:55,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:55,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:16:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-11-28 03:16:55,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:55,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554200779] [2020-11-28 03:16:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:16:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:55,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554200779] [2020-11-28 03:16:55,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:55,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:55,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659482589] [2020-11-28 03:16:55,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:55,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:55,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:55,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:55,924 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-11-28 03:16:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:56,183 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-11-28 03:16:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:56,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:16:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:56,205 INFO L225 Difference]: With dead ends: 58 [2020-11-28 03:16:56,205 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 03:16:56,207 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 [2020-11-28 03:16:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 03:16:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-11-28 03:16:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:16:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-28 03:16:56,259 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-11-28 03:16:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:56,260 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-28 03:16:56,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:56,261 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-28 03:16:56,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:16:56,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:56,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:56,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:56,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:16:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,264 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-11-28 03:16:56,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:56,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561219074] [2020-11-28 03:16:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:56,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:56,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:56,375 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:56,375 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:16:56,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:56,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:56 BoogieIcfgContainer [2020-11-28 03:16:56,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:56,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:56,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:56,410 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:56,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:55" (3/4) ... [2020-11-28 03:16:56,414 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:16:56,469 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a0401310-a7db-4b1c-aaee-829f12f6009d/bin/uautomizer/witness.graphml [2020-11-28 03:16:56,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:56,472 INFO L168 Benchmark]: Toolchain (without parser) took 1972.62 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 57.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:56,473 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 73.4 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:56,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.75 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 60.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:56,474 INFO L168 Benchmark]: Boogie Preprocessor took 51.59 ms. Allocated memory is still 88.1 MB. Free memory was 60.8 MB in the beginning and 59.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:56,475 INFO L168 Benchmark]: RCFGBuilder took 656.48 ms. Allocated memory is still 88.1 MB. Free memory was 59.3 MB in the beginning and 65.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:56,476 INFO L168 Benchmark]: TraceAbstraction took 906.36 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 59.4 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:56,476 INFO L168 Benchmark]: Witness Printer took 60.62 ms. Allocated memory is still 88.1 MB. Free memory was 59.4 MB in the beginning and 57.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:56,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 73.4 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.75 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 60.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.59 ms. Allocated memory is still 88.1 MB. Free memory was 60.8 MB in the beginning and 59.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 656.48 ms. Allocated memory is still 88.1 MB. Free memory was 59.3 MB in the beginning and 65.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 906.36 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 59.4 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.62 ms. Allocated memory is still 88.1 MB. Free memory was 59.4 MB in the beginning and 57.7 MB in the end (delta: 1.6 MB). There was no memory consumed. 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...