./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/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 4ceec10d001c6e3ab8acae30cb42f114023e2890 .............................................................................................................................................................................................................................................................................................. 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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:40:13,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:40:13,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:40:13,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:40:13,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:40:13,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:40:13,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:40:13,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:40:13,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:40:13,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:40:13,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:40:13,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:40:13,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:40:13,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:40:13,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:40:13,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:40:13,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:40:13,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:40:13,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:40:13,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:40:13,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:40:13,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:40:13,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:40:13,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:40:13,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:40:13,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:40:13,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:40:13,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:40:13,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:40:13,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:40:13,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:40:13,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:40:13,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:40:13,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:40:13,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:40:13,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:40:13,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:40:13,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:40:13,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:40:13,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:40:13,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:40:13,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:40:13,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:40:13,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:40:13,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:40:13,463 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:40:13,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:40:13,463 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:40:13,463 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:40:13,463 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:40:13,464 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:40:13,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:40:13,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:40:13,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:40:13,465 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:40:13,465 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:40:13,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:40:13,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:40:13,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:40:13,466 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:40:13,466 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:40:13,466 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:40:13,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:40:13,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:40:13,467 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:40:13,467 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:40:13,467 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:40:13,467 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:40:13,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:40:13,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:40:13,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:40:13,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:40:13,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:40:13,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:40:13,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:40:13,469 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:40:13,469 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:40:13,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:40:13,470 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/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 -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2019-11-26 02:40:13,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:40:13,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:40:13,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:40:13,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:40:13,608 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:40:13,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2019-11-26 02:40:13,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/data/cc3f6bb34/eab73846878e4eebb9a97b9a4ea77251/FLAG6417882ac [2019-11-26 02:40:14,146 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:40:14,146 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2019-11-26 02:40:14,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/data/cc3f6bb34/eab73846878e4eebb9a97b9a4ea77251/FLAG6417882ac [2019-11-26 02:40:14,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/data/cc3f6bb34/eab73846878e4eebb9a97b9a4ea77251 [2019-11-26 02:40:14,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:40:14,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:40:14,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:14,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:40:14,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:40:14,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:14,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7b2276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14, skipping insertion in model container [2019-11-26 02:40:14,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:14,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:40:14,535 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:40:14,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:14,904 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:40:14,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:14,995 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:40:14,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14 WrapperNode [2019-11-26 02:40:14,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:14,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:14,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:40:14,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:40:15,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:15,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:40:15,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:40:15,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:40:15,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... [2019-11-26 02:40:15,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:40:15,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:40:15,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:40:15,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:40:15,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/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 [2019-11-26 02:40:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:40:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:40:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:40:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:40:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:40:15,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:40:15,553 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:40:15,553 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:40:15,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:15 BoogieIcfgContainer [2019-11-26 02:40:15,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:40:15,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:40:15,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:40:15,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:40:15,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:40:14" (1/3) ... [2019-11-26 02:40:15,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aadbcf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:15, skipping insertion in model container [2019-11-26 02:40:15,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:14" (2/3) ... [2019-11-26 02:40:15,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aadbcf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:15, skipping insertion in model container [2019-11-26 02:40:15,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:15" (3/3) ... [2019-11-26 02:40:15,560 INFO L109 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2019-11-26 02:40:15,569 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:40:15,574 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-26 02:40:15,584 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-26 02:40:15,601 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:40:15,601 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:40:15,601 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:40:15,601 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:40:15,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:40:15,601 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:40:15,602 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:40:15,602 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:40:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-26 02:40:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:40:15,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:15,617 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:40:15,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-11-26 02:40:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash 119383862, now seen corresponding path program 1 times [2019-11-26 02:40:15,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:40:15,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1248381710] [2019-11-26 02:40:15,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:40:15,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:40:15,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:40:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:40:15,903 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:40:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:40:15,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1248381710] [2019-11-26 02:40:15,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:40:15,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:40:15,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164036381] [2019-11-26 02:40:15,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:40:15,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:40:15,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:40:15,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:40:15,930 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2019-11-26 02:40:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:40:16,049 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-26 02:40:16,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:40:16,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-26 02:40:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:40:16,057 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:40:16,058 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:40:16,059 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:40:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:40:16,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-26 02:40:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:40:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-26 02:40:16,084 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 8 [2019-11-26 02:40:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:40:16,084 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-26 02:40:16,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:40:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-26 02:40:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:40:16,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:16,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:40:16,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:16,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-11-26 02:40:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:16,288 INFO L82 PathProgramCache]: Analyzing trace with hash -594066643, now seen corresponding path program 1 times [2019-11-26 02:40:16,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:40:16,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [824494123] [2019-11-26 02:40:16,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:16,768 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:40:16,768 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:40:16,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:17,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:40:17 BoogieIcfgContainer [2019-11-26 02:40:17,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:40:17,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:40:17,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:40:17,020 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:40:17,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:15" (3/4) ... [2019-11-26 02:40:17,024 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:40:17,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9495f003-3f20-439e-99dd-ed1ec9c30460/bin/utaipan/witness.graphml [2019-11-26 02:40:17,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:40:17,061 INFO L168 Benchmark]: Toolchain (without parser) took 2588.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -99.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:17,061 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:17,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:17,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:17,063 INFO L168 Benchmark]: Boogie Preprocessor took 25.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:17,063 INFO L168 Benchmark]: RCFGBuilder took 486.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:17,064 INFO L168 Benchmark]: TraceAbstraction took 1463.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:17,064 INFO L168 Benchmark]: Witness Printer took 40.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:17,067 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 520.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 486.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1463.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.22 ms. Allocated memory is still 1.2 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: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L515] length = 1 [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); [L520] COND FALSE !(!arr || !arr2) [L521] i=0 [L521] COND TRUE i