./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/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 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:10:20,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:10:20,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:10:20,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:10:20,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:10:20,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:10:20,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:10:20,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:10:20,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:10:20,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:10:20,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:10:20,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:10:20,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:10:20,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:10:20,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:10:20,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:10:20,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:10:20,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:10:20,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:10:20,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:10:20,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:10:20,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:10:20,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:10:20,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:10:20,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:10:20,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:10:20,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:10:20,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:10:20,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:10:20,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:10:20,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:10:20,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:10:20,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:10:20,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:10:20,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:10:20,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:10:20,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:10:20,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:10:20,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:10:20,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:10:20,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:10:20,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 21:10:20,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:10:20,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:10:20,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:10:20,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:10:20,772 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:10:20,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:10:20,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:10:20,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:10:20,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:10:20,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:10:20,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:10:20,776 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 21:10:20,776 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 21:10:20,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 21:10:20,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:10:20,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 21:10:20,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:10:20,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:10:20,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:10:20,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:10:20,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:10:20,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:10:20,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:10:20,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:10:20,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:10:20,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:10:20,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:10:20,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:10:20,781 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_c7992ab8-47e9-4909-817f-c18e1a848a0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcea98e309b9ccb2c2dc4a4f9353c6c61175172 [2020-11-29 21:10:21,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:10:21,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:10:21,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:10:21,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:10:21,199 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:10:21,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2020-11-29 21:10:21,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/data/d50a6f36e/4c64961a7efe4f808897489ed25080f9/FLAG39a34fb80 [2020-11-29 21:10:22,018 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:10:22,019 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2020-11-29 21:10:22,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/data/d50a6f36e/4c64961a7efe4f808897489ed25080f9/FLAG39a34fb80 [2020-11-29 21:10:22,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/data/d50a6f36e/4c64961a7efe4f808897489ed25080f9 [2020-11-29 21:10:22,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:10:22,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 21:10:22,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:10:22,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:10:22,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:10:22,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a38a055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22, skipping insertion in model container [2020-11-29 21:10:22,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:10:22,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:10:22,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:10:22,761 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:10:22,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:10:22,910 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:10:22,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22 WrapperNode [2020-11-29 21:10:22,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:10:22,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:10:22,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:10:22,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:10:22,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... [2020-11-29 21:10:22,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:10:23,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:10:23,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:10:23,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:10:23,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/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 [2020-11-29 21:10:23,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 21:10:23,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:10:23,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 21:10:23,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 21:10:23,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 21:10:23,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 21:10:23,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 21:10:23,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 21:10:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 21:10:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 21:10:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 21:10:23,098 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 21:10:23,098 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 21:10:23,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 21:10:23,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 21:10:23,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 21:10:23,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 21:10:23,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 21:10:23,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 21:10:23,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 21:10:23,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 21:10:23,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 21:10:23,101 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 21:10:23,101 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 21:10:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 21:10:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 21:10:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 21:10:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 21:10:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 21:10:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 21:10:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 21:10:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 21:10:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 21:10:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 21:10:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 21:10:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 21:10:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 21:10:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 21:10:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 21:10:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 21:10:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 21:10:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 21:10:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 21:10:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 21:10:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 21:10:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 21:10:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 21:10:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 21:10:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 21:10:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 21:10:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 21:10:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 21:10:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 21:10:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 21:10:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 21:10:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 21:10:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 21:10:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 21:10:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 21:10:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 21:10:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 21:10:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 21:10:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 21:10:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 21:10:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 21:10:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 21:10:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 21:10:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 21:10:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 21:10:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 21:10:23,117 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 21:10:23,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 21:10:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 21:10:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 21:10:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 21:10:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 21:10:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 21:10:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 21:10:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 21:10:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 21:10:23,121 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 21:10:23,121 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 21:10:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 21:10:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 21:10:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 21:10:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 21:10:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 21:10:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 21:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 21:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 21:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 21:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 21:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 21:10:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 21:10:23,124 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 21:10:23,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 21:10:23,124 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 21:10:23,124 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 21:10:23,124 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 21:10:23,124 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 21:10:23,124 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 21:10:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 21:10:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 21:10:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 21:10:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 21:10:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 21:10:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 21:10:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 21:10:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 21:10:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 21:10:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 21:10:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 21:10:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 21:10:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 21:10:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 21:10:23,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 21:10:23,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 21:10:23,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:10:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:10:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:10:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:10:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 21:10:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:10:23,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:10:23,810 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-29 21:10:23,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:10:23 BoogieIcfgContainer [2020-11-29 21:10:23,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:10:23,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:10:23,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:10:23,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:10:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:10:22" (1/3) ... [2020-11-29 21:10:23,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e819f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:10:23, skipping insertion in model container [2020-11-29 21:10:23,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:22" (2/3) ... [2020-11-29 21:10:23,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e819f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:10:23, skipping insertion in model container [2020-11-29 21:10:23,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:10:23" (3/3) ... [2020-11-29 21:10:23,830 INFO L111 eAbstractionObserver]: Analyzing ICFG add_last_unsafe.i [2020-11-29 21:10:23,843 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:10:23,850 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-11-29 21:10:23,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-11-29 21:10:23,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:10:23,896 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 21:10:23,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:10:23,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:10:23,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:10:23,902 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:10:23,902 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:10:23,902 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:10:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 21:10:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:10:23,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:23,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:23,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 21:10:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:23,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2072257551, now seen corresponding path program 1 times [2020-11-29 21:10:23,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:23,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723958437] [2020-11-29 21:10:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:10:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:24,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723958437] [2020-11-29 21:10:24,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:24,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:10:24,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034614807] [2020-11-29 21:10:24,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:10:24,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:10:24,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:10:24,214 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-11-29 21:10:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:24,384 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-11-29 21:10:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:10:24,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 21:10:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:24,397 INFO L225 Difference]: With dead ends: 38 [2020-11-29 21:10:24,397 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 21:10:24,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:10:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 21:10:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 21:10:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 21:10:24,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-29 21:10:24,452 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 10 [2020-11-29 21:10:24,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:24,452 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-29 21:10:24,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:10:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-29 21:10:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:10:24,454 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:24,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:24,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:10:24,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 21:10:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:24,456 INFO L82 PathProgramCache]: Analyzing trace with hash 184525090, now seen corresponding path program 1 times [2020-11-29 21:10:24,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:24,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887408660] [2020-11-29 21:10:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:10:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:24,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887408660] [2020-11-29 21:10:24,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:24,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:10:24,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228453155] [2020-11-29 21:10:24,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:10:24,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:24,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:10:24,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:10:24,612 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2020-11-29 21:10:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:24,789 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-11-29 21:10:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:10:24,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 21:10:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:24,791 INFO L225 Difference]: With dead ends: 41 [2020-11-29 21:10:24,792 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 21:10:24,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:10:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 21:10:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-29 21:10:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 21:10:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-29 21:10:24,802 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 11 [2020-11-29 21:10:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:24,803 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-29 21:10:24,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:10:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-29 21:10:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:10:24,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:24,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:24,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:10:24,805 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 21:10:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:24,805 INFO L82 PathProgramCache]: Analyzing trace with hash 184525140, now seen corresponding path program 1 times [2020-11-29 21:10:24,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:24,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582292435] [2020-11-29 21:10:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:10:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:24,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582292435] [2020-11-29 21:10:24,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:24,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:10:24,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040302217] [2020-11-29 21:10:24,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:10:24,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:24,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:10:24,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:10:24,915 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 4 states. [2020-11-29 21:10:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:25,017 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-11-29 21:10:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:10:25,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 21:10:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:25,018 INFO L225 Difference]: With dead ends: 33 [2020-11-29 21:10:25,018 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 21:10:25,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:10:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 21:10:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 21:10:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 21:10:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-29 21:10:25,025 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 11 [2020-11-29 21:10:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:25,025 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-29 21:10:25,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:10:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-29 21:10:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:10:25,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:25,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:25,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:10:25,026 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 21:10:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:25,027 INFO L82 PathProgramCache]: Analyzing trace with hash 184525141, now seen corresponding path program 1 times [2020-11-29 21:10:25,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:25,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507089007] [2020-11-29 21:10:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:10:25,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:10:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:10:25,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:10:25,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:10:25,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 21:10:25,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:10:25,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:10:25 BoogieIcfgContainer [2020-11-29 21:10:25,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:10:25,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:10:25,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:10:25,126 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:10:25,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:10:23" (3/4) ... [2020-11-29 21:10:25,129 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 21:10:25,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c7992ab8-47e9-4909-817f-c18e1a848a0b/bin/uautomizer/witness.graphml [2020-11-29 21:10:25,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:10:25,168 INFO L168 Benchmark]: Toolchain (without parser) took 2908.24 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 41.3 MB in the beginning and 44.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:10:25,169 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 75.5 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:10:25,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.95 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 41.2 MB in the beginning and 59.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:10:25,171 INFO L168 Benchmark]: Boogie Preprocessor took 93.00 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 57.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:10:25,172 INFO L168 Benchmark]: RCFGBuilder took 807.96 ms. Allocated memory is still 92.3 MB. Free memory was 57.2 MB in the beginning and 42.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:10:25,173 INFO L168 Benchmark]: TraceAbstraction took 1309.18 ms. Allocated memory is still 92.3 MB. Free memory was 41.8 MB in the beginning and 45.5 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:10:25,173 INFO L168 Benchmark]: Witness Printer took 39.90 ms. Allocated memory is still 92.3 MB. Free memory was 45.5 MB in the beginning and 44.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:10:25,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 75.5 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 647.95 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 41.2 MB in the beginning and 59.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.00 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 57.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 807.96 ms. Allocated memory is still 92.3 MB. Free memory was 57.2 MB in the beginning and 42.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1309.18 ms. Allocated memory is still 92.3 MB. Free memory was 41.8 MB in the beginning and 45.5 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 39.90 ms. Allocated memory is still 92.3 MB. Free memory was 45.5 MB in the beginning and 44.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 [L515] length = 1 VAL [length=1] [L516] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={2:0}, arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length)={2:0}, a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 97 SDslu, 39 SDs, 0 SdLazy, 151 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...