./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/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 b2309dee6513434817ba1d849be751d9f31667bc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:32:30,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:32:30,603 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:32:30,610 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:32:30,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:32:30,611 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:32:30,611 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:32:30,613 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:32:30,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:32:30,614 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:32:30,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:32:30,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:32:30,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:32:30,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:32:30,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:32:30,618 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:32:30,619 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:32:30,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:32:30,622 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:32:30,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:32:30,624 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:32:30,625 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:32:30,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:32:30,627 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:32:30,627 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:32:30,627 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:32:30,628 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:32:30,628 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:32:30,629 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:32:30,630 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:32:30,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:32:30,630 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:32:30,631 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:32:30,631 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:32:30,631 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:32:30,633 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:32:30,633 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 11:32:30,643 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:32:30,643 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:32:30,644 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:32:30,644 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:32:30,644 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:32:30,644 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:32:30,645 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:32:30,645 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:32:30,645 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:32:30,645 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:32:30,645 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:32:30,645 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:32:30,645 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:32:30,646 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 11:32:30,646 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 11:32:30,646 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 11:32:30,646 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:32:30,646 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:32:30,646 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:32:30,647 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:32:30,648 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:32:30,648 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:32:30,648 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:32:30,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:32:30,648 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:32:30,648 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:32:30,649 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:32:30,649 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:32:30,649 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/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 -> b2309dee6513434817ba1d849be751d9f31667bc [2018-11-28 11:32:30,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:32:30,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:32:30,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:32:30,688 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:32:30,688 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:32:30,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe_false-valid-deref.i [2018-11-28 11:32:30,730 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/data/220c7be0a/c0779a3cee55486e83ee3e86db84b92d/FLAG0213b827d [2018-11-28 11:32:31,096 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:32:31,096 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/sv-benchmarks/c/array-memsafety/cstrlen_unsafe_false-valid-deref.i [2018-11-28 11:32:31,105 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/data/220c7be0a/c0779a3cee55486e83ee3e86db84b92d/FLAG0213b827d [2018-11-28 11:32:31,494 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/data/220c7be0a/c0779a3cee55486e83ee3e86db84b92d [2018-11-28 11:32:31,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:32:31,497 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 11:32:31,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:32:31,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:32:31,500 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:32:31,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495a08ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31, skipping insertion in model container [2018-11-28 11:32:31,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:32:31,528 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:32:31,721 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:32:31,728 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:32:31,798 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:32:31,830 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:32:31,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31 WrapperNode [2018-11-28 11:32:31,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:32:31,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:32:31,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:32:31,832 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:32:31,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... [2018-11-28 11:32:31,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:32:31,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:32:31,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:32:31,866 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:32:31,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/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 [2018-11-28 11:32:31,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:32:31,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:32:31,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 11:32:31,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 11:32:31,902 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-11-28 11:32:31,902 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-11-28 11:32:31,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:32:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 11:32:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 11:32:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 11:32:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 11:32:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 11:32:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 11:32:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 11:32:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 11:32:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 11:32:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 11:32:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 11:32:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 11:32:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 11:32:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure cstrlen [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:32:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:32:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:32:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:32:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:32:32,151 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:32:32,152 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 11:32:32,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:32:32 BoogieIcfgContainer [2018-11-28 11:32:32,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:32:32,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:32:32,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:32:32,155 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:32:32,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:32:31" (1/3) ... [2018-11-28 11:32:32,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40484702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:32:32, skipping insertion in model container [2018-11-28 11:32:32,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:32:31" (2/3) ... [2018-11-28 11:32:32,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40484702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:32:32, skipping insertion in model container [2018-11-28 11:32:32,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:32:32" (3/3) ... [2018-11-28 11:32:32,158 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrlen_unsafe_false-valid-deref.i [2018-11-28 11:32:32,163 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:32:32,168 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-11-28 11:32:32,177 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-11-28 11:32:32,192 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:32:32,193 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:32:32,193 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 11:32:32,193 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:32:32,193 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:32:32,193 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:32:32,194 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:32:32,194 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:32:32,194 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:32:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-28 11:32:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:32:32,208 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:32:32,209 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:32,210 INFO L423 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-11-28 11:32:32,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:32,214 INFO L82 PathProgramCache]: Analyzing trace with hash 171937760, now seen corresponding path program 1 times [2018-11-28 11:32:32,215 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:32,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:32,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:32,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:32,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:32,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:32:32,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:32:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:32:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:32:32,335 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2018-11-28 11:32:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:32,367 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-11-28 11:32:32,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:32:32,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 11:32:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:32:32,376 INFO L225 Difference]: With dead ends: 34 [2018-11-28 11:32:32,376 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 11:32:32,377 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:32:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 11:32:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 11:32:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 11:32:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-28 11:32:32,397 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 10 [2018-11-28 11:32:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:32:32,398 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-28 11:32:32,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:32:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-28 11:32:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:32:32,398 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:32:32,398 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:32,398 INFO L423 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-11-28 11:32:32,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:32,399 INFO L82 PathProgramCache]: Analyzing trace with hash 171937761, now seen corresponding path program 1 times [2018-11-28 11:32:32,399 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:32,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:32,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:32,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:32,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:32,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:32:32,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:32:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:32:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:32:32,460 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2018-11-28 11:32:32,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:32,471 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-28 11:32:32,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:32:32,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 11:32:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:32:32,473 INFO L225 Difference]: With dead ends: 30 [2018-11-28 11:32:32,473 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 11:32:32,473 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:32:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 11:32:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-28 11:32:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 11:32:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-11-28 11:32:32,477 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 10 [2018-11-28 11:32:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:32:32,477 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-11-28 11:32:32,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:32:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-11-28 11:32:32,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 11:32:32,478 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:32:32,478 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:32,478 INFO L423 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-11-28 11:32:32,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:32,478 INFO L82 PathProgramCache]: Analyzing trace with hash -796645829, now seen corresponding path program 1 times [2018-11-28 11:32:32,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:32,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:32,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:32,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:32,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:32,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 11:32:32,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 11:32:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 11:32:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:32:32,555 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2018-11-28 11:32:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:32,621 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-28 11:32:32,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:32:32,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-28 11:32:32,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:32:32,622 INFO L225 Difference]: With dead ends: 28 [2018-11-28 11:32:32,622 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 11:32:32,622 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:32:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 11:32:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-28 11:32:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 11:32:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-28 11:32:32,624 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2018-11-28 11:32:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:32:32,624 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-28 11:32:32,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 11:32:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-28 11:32:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 11:32:32,625 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:32:32,625 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:32,625 INFO L423 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-11-28 11:32:32,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash -796645828, now seen corresponding path program 1 times [2018-11-28 11:32:32,625 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:32,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:32,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:32,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:32,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:32,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 11:32:32,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 11:32:32,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 11:32:32,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:32:32,740 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 10 states. [2018-11-28 11:32:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:32,818 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-11-28 11:32:32,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 11:32:32,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-11-28 11:32:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:32:32,820 INFO L225 Difference]: With dead ends: 32 [2018-11-28 11:32:32,820 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 11:32:32,821 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 11:32:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 11:32:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-28 11:32:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 11:32:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-28 11:32:32,825 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2018-11-28 11:32:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:32:32,825 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-28 11:32:32,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 11:32:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-28 11:32:32,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 11:32:32,826 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:32:32,826 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:32,826 INFO L423 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-11-28 11:32:32,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:32,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1072462699, now seen corresponding path program 1 times [2018-11-28 11:32:32,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:32,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:32,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:32,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:32:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:32:32,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:32:32,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-28 11:32:32,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:32:32,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:32:32,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:32:32,974 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 11 states. [2018-11-28 11:32:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:32:33,081 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-28 11:32:33,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 11:32:33,082 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-11-28 11:32:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:32:33,083 INFO L225 Difference]: With dead ends: 46 [2018-11-28 11:32:33,083 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 11:32:33,083 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-11-28 11:32:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 11:32:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2018-11-28 11:32:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 11:32:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-11-28 11:32:33,088 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 19 [2018-11-28 11:32:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:32:33,088 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-11-28 11:32:33,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:32:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-11-28 11:32:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 11:32:33,089 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:32:33,089 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:32:33,089 INFO L423 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrlenErr0REQUIRES_VIOLATION, cstrlenErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2018-11-28 11:32:33,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:32:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash -814297261, now seen corresponding path program 1 times [2018-11-28 11:32:33,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:32:33,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:32:33,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:33,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:32:33,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:32:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:32:33,129 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 11:32:33,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:32:33 BoogieIcfgContainer [2018-11-28 11:32:33,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:32:33,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:32:33,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:32:33,146 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:32:33,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:32:32" (3/4) ... [2018-11-28 11:32:33,148 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 11:32:33,177 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_207faede-1c56-453c-85ea-7b6ef8bec3e3/bin-2019/uautomizer/witness.graphml [2018-11-28 11:32:33,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:32:33,178 INFO L168 Benchmark]: Toolchain (without parser) took 1681.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 949.6 MB in the beginning and 975.1 MB in the end (delta: -25.6 MB). Peak memory consumption was 137.0 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:33,179 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:32:33,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -201.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:33,179 INFO L168 Benchmark]: Boogie Preprocessor took 33.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:33,180 INFO L168 Benchmark]: RCFGBuilder took 286.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:33,180 INFO L168 Benchmark]: TraceAbstraction took 992.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.3 MB in the end (delta: 126.7 MB). Peak memory consumption was 126.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:32:33,180 INFO L168 Benchmark]: Witness Printer took 31.10 ms. Allocated memory is still 1.2 GB. Free memory is still 975.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:32:33,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -201.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 286.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 992.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.3 MB in the end (delta: 126.7 MB). Peak memory consumption was 126.7 MB. Max. memory is 11.5 GB. * Witness Printer took 31.10 ms. Allocated memory is still 1.2 GB. Free memory is still 975.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 552]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L557] CALL, EXPR build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND FALSE !(length < 1) VAL [length=2] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=2, malloc(length * sizeof(char))={6:0}, nondetString={6:0}] [L546] nondetString[length-1] = '\0' VAL [length=2, malloc(length * sizeof(char))={6:0}, nondetString={6:0}] [L547] return nondetString; VAL [\result={6:0}, length=2, malloc(length * sizeof(char))={6:0}, nondetString={6:0}] [L557] RET, EXPR build_nondet_String() VAL [build_nondet_String()={6:0}] [L557] char* p = build_nondet_String(); [L558] CALL cstrlen(p) VAL [s={6:0}] [L551] const char *p = s; VAL [p={6:0}, s={6:0}, s={6:0}] [L552] EXPR \read(*p) VAL [\read(*p)=4, p={6:0}, s={6:0}, s={6:0}] [L552] COND TRUE *p != '\0' [L553] p = p+2 VAL [p={6:2}, s={6:0}, s={6:0}] [L552] \read(*p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 41 locations, 7 error locations. UNSAFE Result, 0.9s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 114 SDtfs, 73 SDslu, 346 SDs, 0 SdLazy, 297 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 3837 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...