./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 0.1.23-635dfa2 [2018-12-09 07:02:45,420 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 07:02:45,421 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 07:02:45,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 07:02:45,427 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 07:02:45,427 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 07:02:45,428 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 07:02:45,429 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 07:02:45,430 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 07:02:45,430 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 07:02:45,430 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 07:02:45,431 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 07:02:45,431 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 07:02:45,432 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 07:02:45,432 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 07:02:45,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 07:02:45,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 07:02:45,434 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 07:02:45,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 07:02:45,435 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 07:02:45,436 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 07:02:45,436 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 07:02:45,437 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 07:02:45,438 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 07:02:45,438 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 07:02:45,438 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 07:02:45,439 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 07:02:45,439 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 07:02:45,439 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 07:02:45,440 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 07:02:45,440 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 07:02:45,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 07:02:45,440 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 07:02:45,440 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 07:02:45,441 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 07:02:45,441 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 07:02:45,441 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 07:02:45,449 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 07:02:45,449 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 07:02:45,449 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 07:02:45,449 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 07:02:45,449 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 07:02:45,449 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 07:02:45,449 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 07:02:45,450 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 07:02:45,450 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 07:02:45,450 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 07:02:45,450 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 07:02:45,450 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 07:02:45,450 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 07:02:45,450 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 07:02:45,450 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 07:02:45,450 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 07:02:45,451 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 07:02:45,451 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 07:02:45,452 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 07:02:45,452 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2018-12-09 07:02:45,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 07:02:45,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 07:02:45,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 07:02:45,478 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 07:02:45,479 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 07:02:45,479 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.c [2018-12-09 07:02:45,513 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/data/eb9a22ec5/7bc639bd39694fab9f6a112f81894ace/FLAG7d7ec6bec [2018-12-09 07:02:45,964 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 07:02:45,965 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-write.c [2018-12-09 07:02:45,968 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/data/eb9a22ec5/7bc639bd39694fab9f6a112f81894ace/FLAG7d7ec6bec [2018-12-09 07:02:45,977 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/data/eb9a22ec5/7bc639bd39694fab9f6a112f81894ace [2018-12-09 07:02:45,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 07:02:45,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 07:02:45,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 07:02:45,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 07:02:45,982 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 07:02:45,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:02:45" (1/1) ... [2018-12-09 07:02:45,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4857c57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:45, skipping insertion in model container [2018-12-09 07:02:45,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:02:45" (1/1) ... [2018-12-09 07:02:45,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 07:02:45,998 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 07:02:46,094 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 07:02:46,100 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 07:02:46,110 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 07:02:46,119 INFO L195 MainTranslator]: Completed translation [2018-12-09 07:02:46,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46 WrapperNode [2018-12-09 07:02:46,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 07:02:46,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 07:02:46,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 07:02:46,120 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 07:02:46,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 07:02:46,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 07:02:46,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 07:02:46,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 07:02:46,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... [2018-12-09 07:02:46,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 07:02:46,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 07:02:46,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 07:02:46,179 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 07:02:46,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/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 [2018-12-09 07:02:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 07:02:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 07:02:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 07:02:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 07:02:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-12-09 07:02:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-12-09 07:02:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 07:02:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 07:02:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 07:02:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 07:02:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 07:02:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 07:02:46,339 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 07:02:46,340 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-09 07:02:46,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:46 BoogieIcfgContainer [2018-12-09 07:02:46,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 07:02:46,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 07:02:46,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 07:02:46,342 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 07:02:46,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:02:45" (1/3) ... [2018-12-09 07:02:46,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6908973d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:02:46, skipping insertion in model container [2018-12-09 07:02:46,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:46" (2/3) ... [2018-12-09 07:02:46,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6908973d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:02:46, skipping insertion in model container [2018-12-09 07:02:46,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:46" (3/3) ... [2018-12-09 07:02:46,344 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_false-valid-deref-write.c [2018-12-09 07:02:46,350 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 07:02:46,354 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-12-09 07:02:46,364 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-12-09 07:02:46,379 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 07:02:46,379 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 07:02:46,379 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 07:02:46,379 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 07:02:46,379 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 07:02:46,379 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 07:02:46,380 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 07:02:46,380 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 07:02:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-09 07:02:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 07:02:46,394 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 07:02:46,395 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 07:02:46,397 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 07:02:46,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 07:02:46,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2018-12-09 07:02:46,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 07:02:46,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:02:46,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:02:46,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:02:46,429 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 07:02:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 07:02:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 07:02:46,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 07:02:46,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 07:02:46,487 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 07:02:46,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 07:02:46,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 07:02:46,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 07:02:46,498 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2018-12-09 07:02:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 07:02:46,546 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-12-09 07:02:46,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 07:02:46,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 07:02:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 07:02:46,553 INFO L225 Difference]: With dead ends: 58 [2018-12-09 07:02:46,553 INFO L226 Difference]: Without dead ends: 54 [2018-12-09 07:02:46,554 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 07:02:46,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-09 07:02:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2018-12-09 07:02:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 07:02:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-12-09 07:02:46,582 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2018-12-09 07:02:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 07:02:46,582 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-12-09 07:02:46,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 07:02:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-12-09 07:02:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 07:02:46,583 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 07:02:46,583 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 07:02:46,583 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION]=== [2018-12-09 07:02:46,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 07:02:46,583 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2018-12-09 07:02:46,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 07:02:46,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:02:46,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:02:46,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:02:46,584 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 07:02:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 07:02:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 07:02:46,620 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 07:02:46,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:02:46 BoogieIcfgContainer [2018-12-09 07:02:46,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 07:02:46,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 07:02:46,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 07:02:46,634 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 07:02:46,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:46" (3/4) ... [2018-12-09 07:02:46,636 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 07:02:46,659 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_75721638-dc48-45b7-95cc-fa8428b820d1/bin-2019/utaipan/witness.graphml [2018-12-09 07:02:46,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 07:02:46,660 INFO L168 Benchmark]: Toolchain (without parser) took 680.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -91.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-12-09 07:02:46,660 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 07:02:46,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.01 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 07:02:46,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.56 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 07:02:46,661 INFO L168 Benchmark]: Boogie Preprocessor took 44.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -157.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 07:02:46,661 INFO L168 Benchmark]: RCFGBuilder took 161.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-09 07:02:46,662 INFO L168 Benchmark]: TraceAbstraction took 293.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2018-12-09 07:02:46,662 INFO L168 Benchmark]: Witness Printer took 25.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 07:02:46,664 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.01 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.56 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -157.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 161.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 293.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. * Witness Printer took 25.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 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={402:0}, i=0] [L22] COND TRUE i < 100 VAL [b={402:0}, i=0] [L23] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={402:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={402:0}, b={402:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={402:0}, b={402:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={402:0}, b={402:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 15 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...