./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 986c31897144a5b76f321e97eaa1d3383cce25ed .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 22:43:26,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:43:26,989 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:43:27,005 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:43:27,006 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:43:27,007 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:43:27,011 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:43:27,014 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:43:27,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:43:27,019 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:43:27,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:43:27,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:43:27,024 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:43:27,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:43:27,036 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:43:27,037 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:43:27,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:43:27,043 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:43:27,046 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:43:27,047 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:43:27,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:43:27,050 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:43:27,052 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:43:27,052 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:43:27,053 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:43:27,053 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:43:27,055 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:43:27,056 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:43:27,057 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:43:27,058 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:43:27,058 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:43:27,059 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:43:27,059 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:43:27,059 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:43:27,060 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:43:27,061 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:43:27,062 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:43:27,077 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:43:27,077 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:43:27,078 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:43:27,078 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:43:27,079 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:43:27,079 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:43:27,079 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:43:27,079 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:43:27,079 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:43:27,081 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:43:27,081 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:43:27,081 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:43:27,081 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:43:27,081 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:43:27,082 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:43:27,082 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:43:27,083 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:43:27,083 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:43:27,083 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:43:27,083 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:43:27,083 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:43:27,084 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:43:27,084 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:43:27,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:43:27,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:43:27,085 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:43:27,085 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:43:27,085 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:43:27,086 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 986c31897144a5b76f321e97eaa1d3383cce25ed [2018-11-28 22:43:27,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:43:27,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:43:27,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:43:27,172 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:43:27,173 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:43:27,174 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:27,243 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9273e34b9/1bc6a85de0374d2999cfaa2d56eec912/FLAG117fb17c0 [2018-11-28 22:43:27,738 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:43:27,739 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:27,751 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9273e34b9/1bc6a85de0374d2999cfaa2d56eec912/FLAG117fb17c0 [2018-11-28 22:43:28,067 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9273e34b9/1bc6a85de0374d2999cfaa2d56eec912 [2018-11-28 22:43:28,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:43:28,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:43:28,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:28,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:43:28,078 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:43:28,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f875a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28, skipping insertion in model container [2018-11-28 22:43:28,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:43:28,154 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:43:28,555 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:28,572 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:43:28,721 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:28,772 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:43:28,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28 WrapperNode [2018-11-28 22:43:28,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:28,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:43:28,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:43:28,774 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:43:28,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... [2018-11-28 22:43:28,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:43:28,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:43:28,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:43:28,835 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:43:28,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 22:43:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:43:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:43:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 22:43:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 22:43:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure diff [2018-11-28 22:43:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:43:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 22:43:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 22:43:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:43:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:43:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:43:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:43:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:43:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:43:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:43:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:43:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:43:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:43:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:43:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:43:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:43:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:43:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:43:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:43:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:43:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:43:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:43:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:43:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:43:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:43:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:43:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:43:28,902 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:43:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:43:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:43:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:43:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:43:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:43:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:43:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:43:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:43:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:43:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:43:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:43:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:43:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:43:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:43:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:43:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:43:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:43:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:43:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:43:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:43:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:43:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:43:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:43:28,909 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:43:28,909 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:43:28,909 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:43:28,910 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:43:28,910 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:43:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:43:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:43:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:43:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:43:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:43:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:43:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:43:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:43:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:43:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:43:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:43:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:43:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:43:28,913 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:43:28,914 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:43:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:43:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:43:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:43:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:43:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:43:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:43:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:43:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:43:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:43:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:43:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:43:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:43:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:43:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:43:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:43:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:43:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:43:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:43:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:43:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:43:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:43:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:43:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:43:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:43:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:43:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:43:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure diff [2018-11-28 22:43:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:43:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:43:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:43:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:43:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:43:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:43:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:43:29,572 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:43:29,572 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:43:29,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:29 BoogieIcfgContainer [2018-11-28 22:43:29,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:43:29,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:43:29,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:43:29,578 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:43:29,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:43:28" (1/3) ... [2018-11-28 22:43:29,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76034124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:29, skipping insertion in model container [2018-11-28 22:43:29,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:28" (2/3) ... [2018-11-28 22:43:29,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76034124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:29, skipping insertion in model container [2018-11-28 22:43:29,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:29" (3/3) ... [2018-11-28 22:43:29,583 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca_true-valid-memsafety_true-termination.i [2018-11-28 22:43:29,594 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:43:29,605 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-11-28 22:43:29,621 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-11-28 22:43:29,649 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:43:29,650 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:43:29,650 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:43:29,650 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:43:29,650 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:43:29,650 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:43:29,650 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:43:29,651 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:43:29,651 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:43:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-28 22:43:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:43:29,680 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:29,682 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:29,684 INFO L423 AbstractCegarLoop]: === Iteration 1 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:29,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:29,692 INFO L82 PathProgramCache]: Analyzing trace with hash -179147167, now seen corresponding path program 1 times [2018-11-28 22:43:29,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:29,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:29,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:29,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:29,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:29,992 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 22:43:29,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:29,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:43:30,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 22:43:30,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 22:43:30,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:43:30,021 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2018-11-28 22:43:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:30,227 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-28 22:43:30,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 22:43:30,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-28 22:43:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:30,238 INFO L225 Difference]: With dead ends: 35 [2018-11-28 22:43:30,239 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 22:43:30,241 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 22:43:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-28 22:43:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 22:43:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-11-28 22:43:30,282 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2018-11-28 22:43:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:30,283 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-11-28 22:43:30,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 22:43:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-28 22:43:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 22:43:30,284 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:30,284 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:30,284 INFO L423 AbstractCegarLoop]: === Iteration 2 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:30,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:30,286 INFO L82 PathProgramCache]: Analyzing trace with hash -179147166, now seen corresponding path program 1 times [2018-11-28 22:43:30,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:30,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:30,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:30,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:30,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:30,609 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 22:43:30,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:30,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:43:30,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:43:30,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:43:30,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:30,612 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2018-11-28 22:43:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:30,821 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2018-11-28 22:43:30,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:43:30,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-28 22:43:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:30,825 INFO L225 Difference]: With dead ends: 48 [2018-11-28 22:43:30,825 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 22:43:30,826 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-28 22:43:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 22:43:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2018-11-28 22:43:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 22:43:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-28 22:43:30,834 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 14 [2018-11-28 22:43:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:30,835 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 22:43:30,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:43:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-11-28 22:43:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 22:43:30,837 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:30,837 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:30,837 INFO L423 AbstractCegarLoop]: === Iteration 3 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:30,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1258594887, now seen corresponding path program 1 times [2018-11-28 22:43:30,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:30,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:30,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:30,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:30,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:31,036 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 22:43:31,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:31,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:43:31,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 22:43:31,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 22:43:31,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:43:31,042 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2018-11-28 22:43:31,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:31,313 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2018-11-28 22:43:31,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 22:43:31,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-28 22:43:31,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:31,315 INFO L225 Difference]: With dead ends: 38 [2018-11-28 22:43:31,315 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 22:43:31,316 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 22:43:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 22:43:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 22:43:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2018-11-28 22:43:31,322 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 15 [2018-11-28 22:43:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:31,322 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2018-11-28 22:43:31,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 22:43:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2018-11-28 22:43:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 22:43:31,324 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:31,324 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:31,325 INFO L423 AbstractCegarLoop]: === Iteration 4 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:31,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:31,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1258594886, now seen corresponding path program 1 times [2018-11-28 22:43:31,325 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:31,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:31,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:31,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:31,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:31,481 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 22:43:31,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:31,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 22:43:31,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 22:43:31,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 22:43:31,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 22:43:31,483 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 7 states. [2018-11-28 22:43:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:31,756 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2018-11-28 22:43:31,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:43:31,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-11-28 22:43:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:31,759 INFO L225 Difference]: With dead ends: 60 [2018-11-28 22:43:31,759 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 22:43:31,763 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:43:31,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 22:43:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2018-11-28 22:43:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 22:43:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2018-11-28 22:43:31,775 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2018-11-28 22:43:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:31,778 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2018-11-28 22:43:31,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 22:43:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2018-11-28 22:43:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:43:31,780 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:31,780 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:31,780 INFO L423 AbstractCegarLoop]: === Iteration 5 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:31,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:31,786 INFO L82 PathProgramCache]: Analyzing trace with hash -362541574, now seen corresponding path program 1 times [2018-11-28 22:43:31,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:31,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:31,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:31,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:31,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:31,926 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 22:43:31,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:31,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:43:31,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 22:43:31,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 22:43:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:43:31,929 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand 5 states. [2018-11-28 22:43:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:31,993 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2018-11-28 22:43:31,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 22:43:31,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 22:43:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:31,998 INFO L225 Difference]: With dead ends: 54 [2018-11-28 22:43:31,998 INFO L226 Difference]: Without dead ends: 52 [2018-11-28 22:43:31,999 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-28 22:43:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-11-28 22:43:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 22:43:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2018-11-28 22:43:32,007 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 16 [2018-11-28 22:43:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:32,008 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2018-11-28 22:43:32,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 22:43:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2018-11-28 22:43:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:43:32,010 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:32,010 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:32,011 INFO L423 AbstractCegarLoop]: === Iteration 6 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:32,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash -361778601, now seen corresponding path program 1 times [2018-11-28 22:43:32,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:32,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:32,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:32,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:32,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:32,108 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 22:43:32,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:32,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:43:32,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 22:43:32,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 22:43:32,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:43:32,110 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand 5 states. [2018-11-28 22:43:32,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:32,194 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2018-11-28 22:43:32,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 22:43:32,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 22:43:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:32,196 INFO L225 Difference]: With dead ends: 45 [2018-11-28 22:43:32,197 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 22:43:32,197 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 22:43:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 22:43:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 22:43:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2018-11-28 22:43:32,204 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 16 [2018-11-28 22:43:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:32,205 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2018-11-28 22:43:32,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 22:43:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2018-11-28 22:43:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:43:32,207 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:32,207 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:32,207 INFO L423 AbstractCegarLoop]: === Iteration 7 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:32,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:32,209 INFO L82 PathProgramCache]: Analyzing trace with hash -361778600, now seen corresponding path program 1 times [2018-11-28 22:43:32,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:32,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:32,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:32,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:32,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:32,322 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 22:43:32,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:32,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 22:43:32,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:43:32,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:43:32,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:32,323 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 6 states. [2018-11-28 22:43:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:32,408 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2018-11-28 22:43:32,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:43:32,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-28 22:43:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:32,410 INFO L225 Difference]: With dead ends: 54 [2018-11-28 22:43:32,410 INFO L226 Difference]: Without dead ends: 54 [2018-11-28 22:43:32,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:43:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-28 22:43:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2018-11-28 22:43:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 22:43:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2018-11-28 22:43:32,417 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 16 [2018-11-28 22:43:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:32,418 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2018-11-28 22:43:32,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:43:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2018-11-28 22:43:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:43:32,419 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:32,419 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:32,419 INFO L423 AbstractCegarLoop]: === Iteration 8 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:32,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:32,421 INFO L82 PathProgramCache]: Analyzing trace with hash -399235342, now seen corresponding path program 1 times [2018-11-28 22:43:32,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:32,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:32,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:32,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:32,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:32,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:32,572 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:32,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:32,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:33,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 22:43:33,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2018-11-28 22:43:33,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 22:43:33,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 22:43:33,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-28 22:43:33,256 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand 12 states. [2018-11-28 22:43:33,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:33,780 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2018-11-28 22:43:33,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:43:33,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-11-28 22:43:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:33,785 INFO L225 Difference]: With dead ends: 91 [2018-11-28 22:43:33,785 INFO L226 Difference]: Without dead ends: 91 [2018-11-28 22:43:33,786 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-11-28 22:43:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-28 22:43:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2018-11-28 22:43:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-28 22:43:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2018-11-28 22:43:33,796 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 19 [2018-11-28 22:43:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:33,796 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2018-11-28 22:43:33,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 22:43:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2018-11-28 22:43:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:43:33,797 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:33,797 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:33,799 INFO L423 AbstractCegarLoop]: === Iteration 9 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:33,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:33,800 INFO L82 PathProgramCache]: Analyzing trace with hash -141069904, now seen corresponding path program 1 times [2018-11-28 22:43:33,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:33,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:33,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:33,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:33,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:34,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:34,157 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:34,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:34,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:34,269 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 22:43:34,274 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29 [2018-11-28 22:43:34,317 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 22:43:34,318 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 22:43:34,319 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 22:43:34,320 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:43:34,329 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:34,395 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-11-28 22:43:34,412 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-28 22:43:34,418 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 34 [2018-11-28 22:43:34,419 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-28 22:43:34,436 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:34,444 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:34,464 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-28 22:43:34,465 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2018-11-28 22:43:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:34,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:34,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-11-28 22:43:34,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 22:43:34,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 22:43:34,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-11-28 22:43:34,952 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand 14 states. [2018-11-28 22:43:37,045 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 46 [2018-11-28 22:43:37,425 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-28 22:43:37,598 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-28 22:43:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:37,869 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2018-11-28 22:43:37,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:43:37,870 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2018-11-28 22:43:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:37,872 INFO L225 Difference]: With dead ends: 109 [2018-11-28 22:43:37,872 INFO L226 Difference]: Without dead ends: 109 [2018-11-28 22:43:37,874 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-11-28 22:43:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-11-28 22:43:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 64. [2018-11-28 22:43:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 22:43:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2018-11-28 22:43:37,890 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 19 [2018-11-28 22:43:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:37,890 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2018-11-28 22:43:37,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 22:43:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2018-11-28 22:43:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 22:43:37,891 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:37,891 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:37,897 INFO L423 AbstractCegarLoop]: === Iteration 10 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:37,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash 506716446, now seen corresponding path program 1 times [2018-11-28 22:43:37,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:37,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:37,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:37,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:37,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:38,064 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 22:43:38,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:38,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:43:38,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:43:38,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:43:38,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:38,066 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand 4 states. [2018-11-28 22:43:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:38,275 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2018-11-28 22:43:38,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:43:38,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-28 22:43:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:38,278 INFO L225 Difference]: With dead ends: 86 [2018-11-28 22:43:38,278 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 22:43:38,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:43:38,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 22:43:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2018-11-28 22:43:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-28 22:43:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2018-11-28 22:43:38,295 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 20 [2018-11-28 22:43:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:38,295 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2018-11-28 22:43:38,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:43:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2018-11-28 22:43:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 22:43:38,302 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:38,302 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:38,303 INFO L423 AbstractCegarLoop]: === Iteration 11 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:38,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash 508563488, now seen corresponding path program 1 times [2018-11-28 22:43:38,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:38,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:38,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:38,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:38,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 22:43:38,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:38,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:43:38,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:43:38,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:43:38,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:38,675 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 6 states. [2018-11-28 22:43:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:38,759 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2018-11-28 22:43:38,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:43:38,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-28 22:43:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:38,761 INFO L225 Difference]: With dead ends: 98 [2018-11-28 22:43:38,761 INFO L226 Difference]: Without dead ends: 98 [2018-11-28 22:43:38,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-28 22:43:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-28 22:43:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2018-11-28 22:43:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-28 22:43:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 117 transitions. [2018-11-28 22:43:38,768 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 117 transitions. Word has length 20 [2018-11-28 22:43:38,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:38,768 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 117 transitions. [2018-11-28 22:43:38,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:43:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 117 transitions. [2018-11-28 22:43:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 22:43:38,769 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:38,769 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:38,769 INFO L423 AbstractCegarLoop]: === Iteration 12 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:38,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1631778687, now seen corresponding path program 1 times [2018-11-28 22:43:38,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:38,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:38,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:38,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:38,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:39,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:39,538 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:39,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:39,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 22:43:39,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 22:43:39,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2018-11-28 22:43:39,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 22:43:39,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 22:43:39,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:43:39,730 INFO L87 Difference]: Start difference. First operand 90 states and 117 transitions. Second operand 11 states. [2018-11-28 22:43:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:40,042 INFO L93 Difference]: Finished difference Result 136 states and 168 transitions. [2018-11-28 22:43:40,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:43:40,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-11-28 22:43:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:40,045 INFO L225 Difference]: With dead ends: 136 [2018-11-28 22:43:40,045 INFO L226 Difference]: Without dead ends: 136 [2018-11-28 22:43:40,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-28 22:43:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-11-28 22:43:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 129. [2018-11-28 22:43:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-11-28 22:43:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2018-11-28 22:43:40,054 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 22 [2018-11-28 22:43:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:40,054 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2018-11-28 22:43:40,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 22:43:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2018-11-28 22:43:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 22:43:40,058 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:40,058 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:40,059 INFO L423 AbstractCegarLoop]: === Iteration 13 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:40,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash 610710333, now seen corresponding path program 1 times [2018-11-28 22:43:40,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:40,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:40,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:40,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:40,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:40,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:40,297 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:40,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:40,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:40,449 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-28 22:43:40,467 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 22:43:40,468 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 29 [2018-11-28 22:43:40,506 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 22:43:40,507 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 22:43:40,508 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 22:43:40,508 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:43:40,515 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:40,526 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-11-28 22:43:40,531 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-28 22:43:40,574 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 34 [2018-11-28 22:43:40,575 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-28 22:43:40,586 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:40,595 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:43:40,611 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-28 22:43:40,612 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2018-11-28 22:43:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:43:41,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:41,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-11-28 22:43:41,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 22:43:41,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 22:43:41,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-28 22:43:41,152 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand 15 states. [2018-11-28 22:43:42,401 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-11-28 22:43:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:42,468 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2018-11-28 22:43:42,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 22:43:42,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2018-11-28 22:43:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:42,472 INFO L225 Difference]: With dead ends: 161 [2018-11-28 22:43:42,472 INFO L226 Difference]: Without dead ends: 161 [2018-11-28 22:43:42,473 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2018-11-28 22:43:42,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-11-28 22:43:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 113. [2018-11-28 22:43:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-11-28 22:43:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2018-11-28 22:43:42,479 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 22 [2018-11-28 22:43:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:42,479 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2018-11-28 22:43:42,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 22:43:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2018-11-28 22:43:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 22:43:42,481 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:42,481 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:42,481 INFO L423 AbstractCegarLoop]: === Iteration 14 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:42,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:42,482 INFO L82 PathProgramCache]: Analyzing trace with hash 475448279, now seen corresponding path program 1 times [2018-11-28 22:43:42,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:42,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:42,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:42,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:42,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 22:43:42,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:43:42,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:43:42,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:43:42,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:43:42,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:43:42,715 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand 6 states. [2018-11-28 22:43:42,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:42,847 INFO L93 Difference]: Finished difference Result 128 states and 152 transitions. [2018-11-28 22:43:42,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:43:42,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-28 22:43:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:42,849 INFO L225 Difference]: With dead ends: 128 [2018-11-28 22:43:42,849 INFO L226 Difference]: Without dead ends: 71 [2018-11-28 22:43:42,850 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:43:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-28 22:43:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2018-11-28 22:43:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-28 22:43:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2018-11-28 22:43:42,853 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 24 [2018-11-28 22:43:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:42,853 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2018-11-28 22:43:42,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:43:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2018-11-28 22:43:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 22:43:42,854 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:42,854 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:42,855 INFO L423 AbstractCegarLoop]: === Iteration 15 === [diffErr6REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 22:43:42,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash -979957108, now seen corresponding path program 1 times [2018-11-28 22:43:42,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:42,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:42,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:42,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:42,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 22:43:43,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:43:43,238 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:43:43,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:43:43,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:43:43,309 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-11-28 22:43:43,517 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 27 [2018-11-28 22:43:43,624 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 22 [2018-11-28 22:43:43,625 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-28 22:43:43,730 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 38 [2018-11-28 22:43:43,731 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-11-28 22:43:43,790 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-28 22:43:43,828 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-28 22:43:43,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 3 xjuncts. [2018-11-28 22:43:43,868 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:22, output treesize:62 [2018-11-28 22:43:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 22:43:44,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:43:44,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-11-28 22:43:44,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 22:43:44,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 22:43:44,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-11-28 22:43:44,112 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 16 states. [2018-11-28 22:43:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:43:44,897 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2018-11-28 22:43:44,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 22:43:44,898 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2018-11-28 22:43:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:43:44,898 INFO L225 Difference]: With dead ends: 100 [2018-11-28 22:43:44,898 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 22:43:44,900 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2018-11-28 22:43:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 22:43:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 22:43:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 22:43:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 22:43:44,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-11-28 22:43:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:43:44,901 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 22:43:44,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 22:43:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 22:43:44,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 22:43:44,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:43:44 BoogieIcfgContainer [2018-11-28 22:43:44,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:43:44,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:43:44,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:43:44,910 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:43:44,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:29" (3/4) ... [2018-11-28 22:43:44,914 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 22:43:44,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 22:43:44,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 22:43:44,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 22:43:44,922 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure diff [2018-11-28 22:43:44,922 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 22:43:44,928 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-28 22:43:44,928 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-28 22:43:44,928 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 22:43:44,979 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 22:43:44,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:43:44,980 INFO L168 Benchmark]: Toolchain (without parser) took 16908.23 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 272.6 MB). Free memory was 952.7 MB in the beginning and 1.2 GB in the end (delta: -243.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:44,981 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:44,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -174.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:44,982 INFO L168 Benchmark]: Boogie Preprocessor took 60.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:44,982 INFO L168 Benchmark]: RCFGBuilder took 738.86 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:44,982 INFO L168 Benchmark]: TraceAbstraction took 15335.26 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 126.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:44,983 INFO L168 Benchmark]: Witness Printer took 69.17 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:44,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 700.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -174.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 738.86 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15335.26 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 126.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Witness Printer took 69.17 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 558]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 564]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 9 error locations. SAFE Result, 15.2s OverallTime, 15 OverallIterations, 2 TraceHistogramMax, 7.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 419 SDtfs, 1028 SDslu, 1326 SDs, 0 SdLazy, 903 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=12, 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: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 188 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 376 ConstructedInterpolants, 44 QuantifiedInterpolants, 74508 SizeOfPredicates, 40 NumberOfNonLiveVariables, 771 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 20 InterpolantComputations, 12 PerfectInterpolantSequences, 25/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...