./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/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 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 --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:34,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:34,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:34,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:34,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:34,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:34,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:34,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:34,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:34,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:34,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:34,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:34,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:34,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:34,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:34,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:34,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:34,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:34,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:34,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:34,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:34,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:34,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:34,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:34,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:34,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:34,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:34,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:34,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:34,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:34,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:34,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:34,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:34,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:34,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:34,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:34,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:34,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:34,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:34,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:34,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:34,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:56:34,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:34,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:34,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:34,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:34,512 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:34,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:34,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:34,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:34,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:34,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:34,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:34,515 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:56:34,515 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:56:34,516 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:56:34,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:34,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:56:34,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:34,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:34,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:34,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:34,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:34,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:34,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:34,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:34,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:34,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:34,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:34,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:34,519 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_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2020-11-28 02:56:34,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:34,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:34,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:34,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:34,882 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:34,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-11-28 02:56:34,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/data/c50699b6a/aa5f358335434de387f2dd0b712d03b3/FLAG376dc8fe6 [2020-11-28 02:56:35,571 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:35,572 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-11-28 02:56:35,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/data/c50699b6a/aa5f358335434de387f2dd0b712d03b3/FLAG376dc8fe6 [2020-11-28 02:56:35,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/data/c50699b6a/aa5f358335434de387f2dd0b712d03b3 [2020-11-28 02:56:35,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:35,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:56:35,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:35,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:35,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:35,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b9090d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:35, skipping insertion in model container [2020-11-28 02:56:35,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:35,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:36,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,317 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:36,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,448 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:36,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36 WrapperNode [2020-11-28 02:56:36,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:36,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:36,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:36,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:36,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:36,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/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 02:56:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:56:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 02:56:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 02:56:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 02:56:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 02:56:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 02:56:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:56:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 02:56:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 02:56:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 02:56:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 02:56:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 02:56:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 02:56:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 02:56:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 02:56:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 02:56:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 02:56:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 02:56:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 02:56:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 02:56:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 02:56:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 02:56:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 02:56:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 02:56:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 02:56:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 02:56:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 02:56:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 02:56:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 02:56:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 02:56:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 02:56:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 02:56:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 02:56:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 02:56:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 02:56:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 02:56:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 02:56:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 02:56:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 02:56:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 02:56:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 02:56:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 02:56:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 02:56:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 02:56:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 02:56:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 02:56:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 02:56:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 02:56:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 02:56:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 02:56:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 02:56:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 02:56:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 02:56:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 02:56:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 02:56:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 02:56:36,668 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 02:56:36,668 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 02:56:36,668 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 02:56:36,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 02:56:36,669 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 02:56:36,669 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 02:56:36,669 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 02:56:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 02:56:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 02:56:36,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 02:56:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 02:56:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 02:56:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 02:56:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 02:56:36,672 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 02:56:36,672 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 02:56:36,672 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 02:56:36,672 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 02:56:36,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 02:56:36,673 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 02:56:36,673 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 02:56:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 02:56:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 02:56:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 02:56:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 02:56:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 02:56:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 02:56:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 02:56:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 02:56:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 02:56:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 02:56:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 02:56:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 02:56:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 02:56:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 02:56:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 02:56:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 02:56:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 02:56:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 02:56:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 02:56:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 02:56:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 02:56:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 02:56:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 02:56:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 02:56:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 02:56:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 02:56:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 02:56:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 02:56:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 02:56:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 02:56:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 02:56:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 02:56:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 02:56:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 02:56:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 02:56:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 02:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 02:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 02:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:37,487 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:37,487 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 02:56:37,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37 BoogieIcfgContainer [2020-11-28 02:56:37,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:37,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:37,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:37,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:37,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:35" (1/3) ... [2020-11-28 02:56:37,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c273bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (2/3) ... [2020-11-28 02:56:37,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c273bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/3) ... [2020-11-28 02:56:37,504 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2020-11-28 02:56:37,516 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:37,520 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 02:56:37,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 02:56:37,573 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:37,575 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:56:37,575 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:37,575 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:37,576 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:37,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:37,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:37,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 02:56:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:56:37,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:37,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:37,620 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:56:37,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2020-11-28 02:56:37,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536898665] [2020-11-28 02:56:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,760 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:37,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849181268] [2020-11-28 02:56:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:56:38,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:38,127 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 02:56:38,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536898665] [2020-11-28 02:56:38,128 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:38,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849181268] [2020-11-28 02:56:38,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:38,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510505902] [2020-11-28 02:56:38,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:38,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:38,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:38,159 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-11-28 02:56:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,257 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-28 02:56:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:38,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:56:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,269 INFO L225 Difference]: With dead ends: 33 [2020-11-28 02:56:38,270 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 02:56:38,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 02:56:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 02:56:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 02:56:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:56:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-11-28 02:56:38,333 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-11-28 02:56:38,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,334 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-11-28 02:56:38,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:38,335 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-11-28 02:56:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:56:38,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 02:56:38,561 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:56:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2020-11-28 02:56:38,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026099133] [2020-11-28 02:56:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,579 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:38,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21720253] [2020-11-28 02:56:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:38,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:38,996 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-28 02:56:38,996 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-11-28 02:56:38,997 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:39,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:39,011 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 02:56:39,012 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-11-28 02:56:39,034 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 02:56:39,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026099133] [2020-11-28 02:56:39,035 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:39,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21720253] [2020-11-28 02:56:39,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:39,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195212459] [2020-11-28 02:56:39,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:39,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:39,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:39,038 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-11-28 02:56:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,086 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-28 02:56:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:39,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-28 02:56:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,088 INFO L225 Difference]: With dead ends: 28 [2020-11-28 02:56:39,088 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 02:56:39,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 02:56:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 02:56:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 02:56:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-11-28 02:56:39,093 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2020-11-28 02:56:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:39,095 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-11-28 02:56:39,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-11-28 02:56:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:56:39,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:39,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:39,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:39,313 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:56:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2020-11-28 02:56:39,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:39,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774430380] [2020-11-28 02:56:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:39,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:39,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852083090] [2020-11-28 02:56:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:39,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:39,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:39,641 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:39,641 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:56:39,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:39,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:39 BoogieIcfgContainer [2020-11-28 02:56:39,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:39,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:39,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:39,884 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:39,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/4) ... [2020-11-28 02:56:39,887 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:56:39,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9583c5c4-14b9-4a6d-a8ef-8f214ccae05b/bin/uautomizer/witness.graphml [2020-11-28 02:56:39,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:39,958 INFO L168 Benchmark]: Toolchain (without parser) took 4094.12 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 47.4 MB in the beginning and 60.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:39,959 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 79.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:39,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.65 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 47.2 MB in the beginning and 70.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:39,960 INFO L168 Benchmark]: Boogie Preprocessor took 115.63 ms. Allocated memory is still 102.8 MB. Free memory was 70.3 MB in the beginning and 68.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:39,961 INFO L168 Benchmark]: RCFGBuilder took 920.72 ms. Allocated memory is still 102.8 MB. Free memory was 67.7 MB in the beginning and 77.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:39,962 INFO L168 Benchmark]: TraceAbstraction took 2392.39 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 62.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:39,962 INFO L168 Benchmark]: Witness Printer took 72.91 ms. Allocated memory is still 102.8 MB. Free memory was 62.1 MB in the beginning and 60.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:39,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 79.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 583.65 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 47.2 MB in the beginning and 70.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 115.63 ms. Allocated memory is still 102.8 MB. Free memory was 70.3 MB in the beginning and 68.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 920.72 ms. Allocated memory is still 102.8 MB. Free memory was 67.7 MB in the beginning and 77.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2392.39 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 62.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Witness Printer took 72.91 ms. Allocated memory is still 102.8 MB. Free memory was 62.1 MB in the beginning and 60.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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 VAL [length=1] [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 VAL [fac=1, length=1] [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={3:0}, __builtin_alloca (length)={2:0}, arr={2:0}, arr2={3:0}, fac=1, length=1] [L520] COND FALSE !(!arr || !arr2) [L521] i=0 VAL [__builtin_alloca (fac*length)={3:0}, __builtin_alloca (length)={2:0}, arr={2:0}, arr2={3:0}, fac=1, i=0, length=1] [L521] COND TRUE i