./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.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_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/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 10bdb405bd6bca2bddb8b686c44dad291e109402 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:02:12,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:02:12,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:02:12,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:02:12,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:02:12,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:02:12,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:02:12,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:02:12,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:02:12,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:02:12,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:02:12,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:02:12,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:02:12,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:02:12,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:02:12,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:02:12,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:02:12,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:02:12,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:02:12,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:02:12,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:02:12,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:02:12,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:02:12,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:02:12,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:02:12,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:02:12,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:02:12,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:02:12,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:02:12,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:02:12,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:02:12,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:02:12,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:02:12,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:02:12,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:02:12,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:02:12,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:02:12,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:02:12,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:02:12,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:02:12,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:02:12,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:02:12,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:02:12,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:02:12,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:02:12,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:02:12,966 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:02:12,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:02:12,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:02:12,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:02:12,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:02:12,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:02:12,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:02:12,967 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:02:12,968 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:02:12,968 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:02:12,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:02:12,968 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:02:12,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:02:12,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:02:12,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:02:12,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:02:12,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:02:12,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:02:12,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:02:12,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:02:12,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:02:12,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:02:12,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:02:12,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:02:12,971 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_207cf853-2e72-47a8-a963-c9b79ae99f03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10bdb405bd6bca2bddb8b686c44dad291e109402 [2020-11-30 00:02:13,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:02:13,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:02:13,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:02:13,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:02:13,332 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:02:13,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2020-11-30 00:02:13,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/data/1e11bfe93/f9c8b027aa4446c29b308f3359e78c96/FLAGaad86845d [2020-11-30 00:02:13,997 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:02:13,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2020-11-30 00:02:14,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/data/1e11bfe93/f9c8b027aa4446c29b308f3359e78c96/FLAGaad86845d [2020-11-30 00:02:14,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/data/1e11bfe93/f9c8b027aa4446c29b308f3359e78c96 [2020-11-30 00:02:14,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:02:14,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:02:14,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:02:14,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:02:14,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:02:14,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:14,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd62543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14, skipping insertion in model container [2020-11-30 00:02:14,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:14,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:02:14,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:02:14,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:02:14,825 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:02:14,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:02:14,943 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:02:14,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14 WrapperNode [2020-11-30 00:02:14,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:02:14,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:02:14,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:02:14,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:02:14,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:14,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:14,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:14,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:15,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:15,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:15,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... [2020-11-30 00:02:15,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:02:15,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:02:15,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:02:15,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:02:15,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/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 [2020-11-30 00:02:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:02:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:02:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-30 00:02:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-30 00:02:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-30 00:02:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-30 00:02:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-30 00:02:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemset [2020-11-30 00:02:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:02:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 00:02:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 00:02:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 00:02:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 00:02:15,129 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 00:02:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 00:02:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 00:02:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 00:02:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 00:02:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 00:02:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 00:02:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 00:02:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 00:02:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 00:02:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 00:02:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 00:02:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-30 00:02:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-30 00:02:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-30 00:02:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-30 00:02:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-30 00:02:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 00:02:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 00:02:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 00:02:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 00:02:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 00:02:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 00:02:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 00:02:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 00:02:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 00:02:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 00:02:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 00:02:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 00:02:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 00:02:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 00:02:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 00:02:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 00:02:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 00:02:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 00:02:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 00:02:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 00:02:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 00:02:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 00:02:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 00:02:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 00:02:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 00:02:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 00:02:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 00:02:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 00:02:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 00:02:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 00:02:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 00:02:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 00:02:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 00:02:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 00:02:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 00:02:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 00:02:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 00:02:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 00:02:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 00:02:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 00:02:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 00:02:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 00:02:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 00:02:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 00:02:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 00:02:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 00:02:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 00:02:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 00:02:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 00:02:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 00:02:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 00:02:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 00:02:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 00:02:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 00:02:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 00:02:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 00:02:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 00:02:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 00:02:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 00:02:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 00:02:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 00:02:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 00:02:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 00:02:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 00:02:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 00:02:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 00:02:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 00:02:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 00:02:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 00:02:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 00:02:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 00:02:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 00:02:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 00:02:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 00:02:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 00:02:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 00:02:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure cmemset [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:02:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:02:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:02:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:02:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:02:15,700 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:02:15,700 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-30 00:02:15,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:02:15 BoogieIcfgContainer [2020-11-30 00:02:15,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:02:15,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:02:15,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:02:15,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:02:15,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:02:14" (1/3) ... [2020-11-30 00:02:15,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379e2902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:02:15, skipping insertion in model container [2020-11-30 00:02:15,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:02:14" (2/3) ... [2020-11-30 00:02:15,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379e2902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:02:15, skipping insertion in model container [2020-11-30 00:02:15,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:02:15" (3/3) ... [2020-11-30 00:02:15,712 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-1.i [2020-11-30 00:02:15,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:02:15,731 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:02:15,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:02:15,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:02:15,788 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:02:15,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:02:15,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:02:15,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:02:15,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:02:15,795 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:02:15,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:02:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 00:02:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:02:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:15,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:15,847 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1505405860, now seen corresponding path program 1 times [2020-11-30 00:02:15,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:15,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133251067] [2020-11-30 00:02:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:16,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133251067] [2020-11-30 00:02:16,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:16,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 00:02:16,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383746186] [2020-11-30 00:02:16,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:02:16,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:02:16,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:02:16,309 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 9 states. [2020-11-30 00:02:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:16,789 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-11-30 00:02:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:02:16,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-30 00:02:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:16,802 INFO L225 Difference]: With dead ends: 32 [2020-11-30 00:02:16,802 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:02:16,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:02:16,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:02:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-30 00:02:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:02:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-11-30 00:02:16,843 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2020-11-30 00:02:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:16,844 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-11-30 00:02:16,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:02:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-11-30 00:02:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:02:16,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:16,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:16,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:02:16,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1505405861, now seen corresponding path program 1 times [2020-11-30 00:02:16,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:16,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503181392] [2020-11-30 00:02:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:17,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503181392] [2020-11-30 00:02:17,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:17,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:02:17,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717909718] [2020-11-30 00:02:17,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:02:17,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:17,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:02:17,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:02:17,026 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 8 states. [2020-11-30 00:02:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:17,254 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-30 00:02:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:02:17,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-30 00:02:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:17,258 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:02:17,258 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:02:17,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:02:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:02:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-11-30 00:02:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:02:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-11-30 00:02:17,265 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2020-11-30 00:02:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:17,265 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-11-30 00:02:17,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:02:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-11-30 00:02:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:02:17,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:17,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:17,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:02:17,267 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:17,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1092272849, now seen corresponding path program 1 times [2020-11-30 00:02:17,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:17,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743520388] [2020-11-30 00:02:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:02:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:17,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743520388] [2020-11-30 00:02:17,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:17,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:02:17,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849782195] [2020-11-30 00:02:17,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:02:17,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:17,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:02:17,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:02:17,468 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2020-11-30 00:02:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:17,745 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-30 00:02:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:02:17,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-30 00:02:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:17,748 INFO L225 Difference]: With dead ends: 39 [2020-11-30 00:02:17,748 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:02:17,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:02:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:02:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-11-30 00:02:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:02:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-30 00:02:17,767 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2020-11-30 00:02:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:17,768 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-30 00:02:17,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:02:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-30 00:02:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:02:17,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:17,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:17,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:02:17,775 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:17,776 INFO L82 PathProgramCache]: Analyzing trace with hash 699245839, now seen corresponding path program 1 times [2020-11-30 00:02:17,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:17,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150184156] [2020-11-30 00:02:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:02:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:17,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150184156] [2020-11-30 00:02:17,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:17,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 00:02:17,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315134745] [2020-11-30 00:02:17,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:02:17,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:17,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:02:17,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:02:17,952 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-11-30 00:02:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:18,251 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-30 00:02:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:02:18,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-30 00:02:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:18,253 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:02:18,253 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 00:02:18,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:02:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 00:02:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-11-30 00:02:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:02:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-11-30 00:02:18,268 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2020-11-30 00:02:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:18,268 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-11-30 00:02:18,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:02:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-11-30 00:02:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:02:18,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:18,270 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:18,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:02:18,270 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:18,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:18,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1853612607, now seen corresponding path program 1 times [2020-11-30 00:02:18,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:18,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876602723] [2020-11-30 00:02:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:18,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876602723] [2020-11-30 00:02:18,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:18,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:02:18,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755389262] [2020-11-30 00:02:18,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:02:18,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:18,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:02:18,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:02:18,443 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2020-11-30 00:02:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:18,671 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-11-30 00:02:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:02:18,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-30 00:02:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:18,672 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:02:18,672 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:02:18,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:02:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:02:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-11-30 00:02:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 00:02:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-11-30 00:02:18,679 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 19 [2020-11-30 00:02:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:18,680 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-11-30 00:02:18,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:02:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-11-30 00:02:18,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:02:18,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:18,681 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:18,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:02:18,681 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2111778045, now seen corresponding path program 1 times [2020-11-30 00:02:18,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:18,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51091226] [2020-11-30 00:02:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:18,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51091226] [2020-11-30 00:02:18,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916235034] [2020-11-30 00:02:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/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 [2020-11-30 00:02:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:19,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-30 00:02:19,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:19,280 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 00:02:19,280 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:02:19,350 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:02:19,351 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:02:19,351 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-30 00:02:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:19,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:02:19,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2020-11-30 00:02:19,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444513907] [2020-11-30 00:02:19,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-30 00:02:19,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:19,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-30 00:02:19,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:02:19,796 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 21 states. [2020-11-30 00:02:20,301 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-11-30 00:02:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:20,786 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-30 00:02:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:02:20,787 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2020-11-30 00:02:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:20,789 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:02:20,789 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 00:02:20,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2020-11-30 00:02:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 00:02:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-30 00:02:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:02:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-11-30 00:02:20,796 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 19 [2020-11-30 00:02:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:20,796 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-11-30 00:02:20,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-30 00:02:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-11-30 00:02:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:02:20,798 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:20,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:21,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 00:02:21,020 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:21,020 INFO L82 PathProgramCache]: Analyzing trace with hash 538552420, now seen corresponding path program 1 times [2020-11-30 00:02:21,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:21,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612680445] [2020-11-30 00:02:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:21,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:02:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:21,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612680445] [2020-11-30 00:02:21,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:21,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:02:21,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246435861] [2020-11-30 00:02:21,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:02:21,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:02:21,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:02:21,161 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2020-11-30 00:02:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:21,260 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-11-30 00:02:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:02:21,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 00:02:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:21,261 INFO L225 Difference]: With dead ends: 42 [2020-11-30 00:02:21,261 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:02:21,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:02:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:02:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 00:02:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:02:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-11-30 00:02:21,264 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2020-11-30 00:02:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:21,264 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-30 00:02:21,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:02:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-11-30 00:02:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:02:21,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:21,265 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:21,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:02:21,265 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:21,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:21,266 INFO L82 PathProgramCache]: Analyzing trace with hash 402998846, now seen corresponding path program 2 times [2020-11-30 00:02:21,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:21,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751204737] [2020-11-30 00:02:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:21,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:21,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751204737] [2020-11-30 00:02:21,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034309246] [2020-11-30 00:02:21,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/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 [2020-11-30 00:02:21,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:02:21,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:02:21,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-30 00:02:21,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:21,988 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 00:02:21,988 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:02:21,994 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:02:21,994 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:02:21,994 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-30 00:02:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:22,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:02:22,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2020-11-30 00:02:22,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338364581] [2020-11-30 00:02:22,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-30 00:02:22,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:22,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-30 00:02:22,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-11-30 00:02:22,662 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 28 states. [2020-11-30 00:02:23,710 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-11-30 00:02:24,238 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-30 00:02:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:24,619 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-11-30 00:02:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 00:02:24,621 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 24 [2020-11-30 00:02:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:24,622 INFO L225 Difference]: With dead ends: 36 [2020-11-30 00:02:24,622 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:02:24,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=219, Invalid=1851, Unknown=0, NotChecked=0, Total=2070 [2020-11-30 00:02:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:02:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-30 00:02:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 00:02:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-30 00:02:24,629 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-11-30 00:02:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:24,630 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-30 00:02:24,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-30 00:02:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-30 00:02:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:02:24,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:24,631 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:24,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:24,844 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cmemsetErr1REQUIRES_VIOLATION, cmemsetErr0REQUIRES_VIOLATION]=== [2020-11-30 00:02:24,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:24,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1008858722, now seen corresponding path program 3 times [2020-11-30 00:02:24,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:24,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483369424] [2020-11-30 00:02:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:02:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:25,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483369424] [2020-11-30 00:02:25,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048685362] [2020-11-30 00:02:25,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/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 [2020-11-30 00:02:25,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-30 00:02:25,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:02:25,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 66 conjunts are in the unsatisfiable core [2020-11-30 00:02:25,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:25,566 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 00:02:25,566 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:02:25,571 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:02:25,571 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:02:25,571 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 00:02:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:26,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:02:26,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2020-11-30 00:02:26,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683161839] [2020-11-30 00:02:26,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-30 00:02:26,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:26,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-30 00:02:26,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2020-11-30 00:02:26,196 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 34 states. [2020-11-30 00:02:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:27,672 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-30 00:02:27,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-30 00:02:27,672 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2020-11-30 00:02:27,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:27,673 INFO L225 Difference]: With dead ends: 40 [2020-11-30 00:02:27,673 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:02:27,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=315, Invalid=2547, Unknown=0, NotChecked=0, Total=2862 [2020-11-30 00:02:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:02:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:02:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:02:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:02:27,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-11-30 00:02:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:27,674 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:02:27,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-30 00:02:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:02:27,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:02:27,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:27,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:02:27 BoogieIcfgContainer [2020-11-30 00:02:27,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:02:27,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:02:27,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:02:27,880 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:02:27,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:02:15" (3/4) ... [2020-11-30 00:02:27,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:02:27,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-30 00:02:27,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-11-30 00:02:27,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-11-30 00:02:27,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-11-30 00:02:27,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-11-30 00:02:27,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-30 00:02:27,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemset [2020-11-30 00:02:27,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-11-30 00:02:27,897 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 00:02:27,897 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 00:02:27,897 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:02:27,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:02:27,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_207cf853-2e72-47a8-a963-c9b79ae99f03/bin/uautomizer/witness.graphml [2020-11-30 00:02:27,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:02:27,942 INFO L168 Benchmark]: Toolchain (without parser) took 13638.68 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 61.3 MB in the beginning and 64.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:27,943 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 92.3 MB. Free memory was 49.8 MB in the beginning and 49.8 MB in the end (delta: 34.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:02:27,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.89 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.0 MB in the beginning and 78.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:27,947 INFO L168 Benchmark]: Boogie Preprocessor took 96.13 ms. Allocated memory is still 111.1 MB. Free memory was 78.3 MB in the beginning and 75.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:27,948 INFO L168 Benchmark]: RCFGBuilder took 657.42 ms. Allocated memory is still 111.1 MB. Free memory was 75.9 MB in the beginning and 39.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:27,948 INFO L168 Benchmark]: TraceAbstraction took 12174.96 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 39.0 MB in the beginning and 67.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:27,949 INFO L168 Benchmark]: Witness Printer took 61.64 ms. Allocated memory is still 161.5 MB. Free memory was 67.6 MB in the beginning and 64.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:27,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 92.3 MB. Free memory was 49.8 MB in the beginning and 49.8 MB in the end (delta: 34.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 640.89 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.0 MB in the beginning and 78.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.13 ms. Allocated memory is still 111.1 MB. Free memory was 78.3 MB in the beginning and 75.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 657.42 ms. Allocated memory is still 111.1 MB. Free memory was 75.9 MB in the beginning and 39.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12174.96 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 39.0 MB in the beginning and 67.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * Witness Printer took 61.64 ms. Allocated memory is still 161.5 MB. Free memory was 67.6 MB in the beginning and 64.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.0s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 425 SDslu, 399 SDs, 0 SdLazy, 1800 SolverSat, 164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 54731 SizeOfPredicates, 35 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 17/100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...